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Components
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Information
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Applets
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Button : Reset
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Reset : this botton resets the object positions and the parameters of the optical
system (cardinal elements such as the focal length), the positions of the fibers,
the position of the light sources and the values of the refraction indexes.
A water sound is played when the reset button is pushed.
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All
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Button : 1, 2, ..., 11 rays
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This button gives the user the possibility to choose the number of rays to
be injected. The value of this button changes in a cyclic way from 1 to 11.
The initial value can be set in the html file :
<param name="Number
of rays"
value="9">.
The default initial value is 1..
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“Injection of many rays using an injection ball”
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Button : 1, 2, ..., fibers
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This button gives the user the possibility to choose the number of fibers to
be used in output or in both input and output. The value of this button changes
in a cyclic way from 1 to N (the maximal number that corresponds to the lens
length).
The initial value can be set in the html file :
<param name="Num.
of fibers N="
value="5">.
The default initial value is 1.
.
The fiber step in pixels can be set in the html file :
<param name="fiber
step"
value="30">.
The default initial value is in function of the fiber cladding.
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“1 to N fiber network”, “1 to N fiber network using a prism”,
“N to N fiber network”, “N to N fiber network using prisms”, “Two-way 1 to N fiber network”,
“Two-way 1 to N fiber network using a prism”, “Two-way N to N fiber network”,
“Two-way N to N fiber network using prisms”
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Button : sound 1,2, ... 72
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This button gives the user the possibility to choose the sound clip to play.
The value of this button changes in a cyclic way from 1 to 72.
The initial value can be set in the html file :
<param name="musicFile"
value="sound/sound55.au">.
The default initial music file name is “sounds/sound39”.
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“1 to N fiber network”, “1 to N fiber network using a prism”,
“N to N fiber network”, “N to N fiber network using prisms”, “Two-way 1 to N fiber network”,
“Two-way 1 to N fiber network using a prism”, “Two-way N to N fiber network”,
“Two-way N to N fiber network using prisms”
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Button : music
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This button turns music on or off during the manipulation of the applet.
When music is eanbled one sound clip randomly among 72 types starts.
When the user disactivates the music checkbox and activates it again he will randomly obtain
another sound clip.
If the user wants to play a special music, then he should precise the file name
in the "html" file :
<param name="musicFile"
value="here you indicate the whole
path">
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All
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Textfield : n1
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This parameter indicates the core refraction index.
The user can modify this value directly or through the
scrollbar box.
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“Injection into an optical step index fiber”,
“Injection using an injection ball”, “Injection of many rays using an injection ball”,
“Injection using two injection balls”, “Injection into two fibers : first one with balls”,
and “Injection into two fibers : both with balls”.
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Textfield : n2
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This parameter indicates the cladding refraction index.
The user can modify this value directly or through the
scrollbar box.
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“Injection into an optical step index fiber”,
“Injection using an injection ball”, “Injection of many rays using an injection ball”,
“Injection using two injection balls”, “Injection into two fibers : first one with balls”,
and “Injection into two fibers : both with balls”.
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Scrollbar : core
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refraction index of the core :
The user can choose the refraction index of the fiber core by moving
the corresponding scrollbar panel.
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“Injection into an optical step index fiber”,
“Injection using an injection ball”, “Injection of many rays using an injection ball”,
“Injection using two injection balls”, “Injection into two fibers : first one with balls”,
and “Injection into two fibers : both with balls”.
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Scrollbar : cladding
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refraction index of the cladding :
The user can choose the refraction index of the fiber cladding by moving
the corresponding scrollbar panel.
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“Injection into an optical step index fiber”,
“Injection using an injection ball”, “Injection of many rays using an injection ball”,
“Injection using two injection balls”, “Injection into two fibers : first one with balls”,
and “Injection into two fibers : both with balls”.
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Applet
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Elements to move with the mouse
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Information
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Injection into an optical step index fiber
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
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Injection into an optical step index fiber.
The user can learn how the ray is guided in
a step index fiber.
Depending of the form and position of the fiber and the angular
orientation of the light source, the ray may exit the fiber or not.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
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Injection of many rays using an injection ball
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
The injection ball is shifted with. When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
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Injection into an optical step index fiber using an input injection ball.
The user can learn how a small injection ball improve the candition of guiding inside the
the step index fiber.
Depending of the form and position of the fiber and the angular
orientation of the light source, the ray may exit the fiber or not.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
No energy loss occurs if the curvature of the fiber is not very big and the incidence angle
is small.
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Injection of many rays using an injection ball
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
When the user stop moving the mouse he will see the light traveling from the input fiber to its corresponding output fiber.
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Injection of many rays into an optical step index fiber by using an injection ball.
The user can learn how the incidence angle is determining for guiding the ray inside
the step index fiber.
Depending of the form and position of the fiber and the angular
orientation of the light source, some rays may exit the fiber and some others may not.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
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Injection using two injection balls
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
When the user stop moving the mouse he will see the light traveling from the input fiber to its corresponding output fiber.
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Injection into an optical step index fiber by using an injection ball and an output ball.
The user can investigate the effect of the injection ball on the guiding of the ray and the
effect of the output ball on making the output ray more parallel.
Depending of the form and position of the fiber and the angular
orientation of the light source, the ray may exit the fiber or not.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
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Injection into two fibers : first one with balls
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
When the user stop moving the mouse he will see the light traveling from the input fiber to its corresponding output fiber.
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Injection into two optical step index fibers by using an injection ball for the first one.
The user can learn how the put two step index fibers in serie.
Depending of the form and position of the fiber and the angular
orientation of the light source, the ray may enter the second fiber or not. Rays entering
the second fiber may mot exist it.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
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Injection into two fibers : both with balls
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laser, fiber
The user can rotate the light source by acting on the red push/pull elements.
When the maximal angles is exceeded a beep will done.
The user can vertically translate the fiber by acting on the left red push/pull elements.
When the maximal shift is exceeded a beep will done.
The user can vary the curvative of the fiber by acting on the red push/pull elements in
the middle and/or the right red push/pull elements.
When an object is moved a "zzziuu" sound will be done.
When the user stop moving the mouse he will see the light traveling from the input fiber to its corresponding output fiber.
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Injection into two optical step index fiber by using an injection ball and an output ball
for each one.
The user can learn how the put two step index fibers in serie.
Depending of the form and position of the fiber and the angular
orientation of the light source, the ray may enter the second fiber or not. Rays entering
the second fiber may mot exist it.
A ray can be partially lost if is incident to the cladding with an angle
smaller than the limit angle. Above this angle, the ray is totally reflected and does not
enter the cladding.
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Applet
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Elements to move with the mouse
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Information
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1 to 1 fiber network
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input fiber, output fiber, light source, Cardinal elements of the
two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input or the output fiber. The other fiber moves
correspondingly such that the two fibers form the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
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Free space optical interconnection newtwork using two optical fibers at the extremities
of a 4F imaging setup.
Maximal efficiency of coupling two identical single mode fibers is obtained by the
4F imaging setup. A 1-1 image of the emitting fiber core should be made upon the receiving
one, and the launching angle (if we consider the lateral core surface as a point) with
the fiber end-face has to be the same at the receiving fiber end.
Thus, the foci of the lenses must coincide.
The architecture is also optimal in terms of aberrations.
Idea : The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Given that in practice this wavefront can be accurately approximated by a Gaussian
distribution, it is important to ensure a constant phase at the output.
Note : The beam is drawn according to geometrical optics.
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1 to 1 fiber network using a prism
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input fiber, light source, prism, Cardinal elements of
the two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. The other fiber moves
correspondingly such that the two fibers forms the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
By clicking on the center of the prism, the user can change the slope stepwise.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
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Free space optical interconnection newtwork using a prism and two optical fibers at the
extremities of a 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
This condition is fulfilled since the prism only operates a shift and does not affect the
form of the wavefront.
The fiber are conjugated although they are not symmetrical.
Note : The beam is drawn according to geometrical optics.
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1 to N fiber network
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input fiber, light source, Cardinal elements of the
two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. When the input fiber becomes symmetrical
fiber of any output fiber the light beam switches to this new ouput fiber.
When the maximal shift is exceeded a beep will done.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
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Free space optical interconnection newtwork using one input fiber and N output fibers arranged
in a 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber 1 is connected to fiber n' when these two fibers becomes conjugated (in this
case where no prism is used : symmetrical).
Note : The beam is drawn according to geometrical optics.
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1 to N fiber network using a prism
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input fiber, light source, prism, Cardinal elements of
the two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. The other fiber moves
correspondingly such that the two fibers formes the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using a prism and one input fiber and N
output fibers arranged in a 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber 1 is connected to fiber n' when these two fibers becomes conjugated (in this
case not symmetrical because of the prism).
The prism is a switching element that is used to select the output fiber.
Note : The beam is drawn according to geometrical optics.
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N to N fiber network
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input fibers, output fibers, light source, Cardinal elements of the
two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate any input or any output fiber. The conjugated fiber moves
correspondingly such that the two fibers form the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using N input fibers and N output fibers arranged
in a 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber n is connected to fiber n' when these two fibers becomes conjugated (symmetrical because
no prism is used).
Note : The beam is drawn according to geometrical optics.
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N to N fiber network using prisms
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light source, input prisms, Cardinal
elements of the two lenses.
To activate the light source, the user should click on it. It becomes then
green.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
By clicking on the center of the prism, the user can change the slope stepwise.
The user can move any of the two lenses. The second will be moved such to form a 4F imaging
setup.
The anterior (F1 and F2) and the posterior
(F'1 and F'2) focal points can also be moved.
The focal lengthes are linked together such to form a 4F imaging system.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using fixed and programmable prisms and N input
fibers and N output fibers arranged in a 4F imaging setup.
The input prism are programmable whereas prisms in the focal plane are fixed. The role of each
input prism is to select the right fixed prism that allows the shift corresponding to the
required output fiber.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber n is connected to fiber n' when these two fibers becomes conjugated (in this
case where prisms are used : symmetrical).
Note : The beam is drawn according to geometrical optics.
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Two-way 1 to 1 fiber network
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input fiber, output fiber, light source, Cardinal elements of the
lens.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input or the output fiber. The other fiber moves
correspondingly such that the two fibers form the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using two optical fibers at the extremities
of a two-way 4F imaging setup.
Maximal efficiency of coupling two identical single mode fibers is obtained by the
two-way 4F imaging setup. A 1-1 image of the emitting fiber core should be made upon the receiving
one, and the launching angle (if we consider the lateral core surface as a point) with
the fiber end-face has to be the same at the receiving fiber end.
Thus, the foci of the lenses must coincide.
The architecture is also optimal in terms of aberrations.
Idea : The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Given that in practice this wavefront can be accurately approximated by a Gaussian
distribution, it is important to ensure a constant phase at the output.
Note : The beam is drawn according to geometrical optics.
|
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Two-way 1 to 1 fiber network using a prism
|
input fiber, light source, prism, Cardinal elements of
the lens.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. The other fiber moves
correspondingly such that the two fibers forms the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
By clicking on the center of the prism, the user can change the slope stepwise.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using a prism and two optical fibers at the
extremities of a two-way 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
This condition is fulfilled since the prism only operates a shift and does not affect the
form of the wavefront.
The fiber are conjugated although they are not symmetrical.
Note : The beam is drawn according to geometrical optics.
|
|
Two-way 1 to N fiber network
|
input fiber, light source, Cardinal elements of the
lens.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. When the input fiber becomes symmetrical
fiber of any output fiber the light beam switches to this new ouput fiber.
When the maximal shift is exceeded a beep will done.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using one input fiber and N output fibers arranged
in a two-way 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber 1 is connected to fiber n' when these two fibers becomes conjugated (in this
case where no prism is used : symmetrical).
Note : The beam is drawn according to geometrical optics.
|
|
Two-way 1 to N fiber network using a prism
|
input fiber, light source, prism, Cardinal elements of
the lens.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate the input fiber. The other fiber moves
correspondingly such that the two fibers formes the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using a prism and one input fiber and N
output fibers arranged in a two-way 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber 1 is connected to fiber n' when these two fibers becomes conjugated (in this
case not symmetrical because of the prism).
The prism is a switching element that is used to select the output fiber.
Note : The beam is drawn according to geometrical optics.
|
|
Two-way N to N fiber network
|
input fibers, output fibers, light source, Cardinal elements of the
lens.
To activate the light source, the user should click on it. It becomes then
green.
The user can vertically translate any input or any output fiber. The conjugated fiber moves
correspondingly such that the two fibers form the extremities of the light beam.
When the maximal shift is exceeded a beep will done.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using N input fibers and N output fibers arranged
in a two-way 4F imaging setup.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber n is connected to fiber n' when these two fibers becomes conjugated (symmetrical because
no prism is used).
Note : The beam is drawn according to geometrical optics.
|
|
Two-way N to N fiber network using prisms
|
light source, input prisms, Cardinal
elements of the lens.
To activate the light source, the user should click on it. It becomes then
green.
The slope of the prism can be changed by changing the base or the height of the triangle.
The user can also move any corner of the prism. The prism is automatically centered when the
mouse is released.
By clicking on the center of the prism, the user can change the slope stepwise.
The user can move the lens used for the two-way 4F imaging setup.
The anterior (F1) and the posterior (F'1)
focal points can also be moved.
When an object is moved a "zzziuu" sound will be done.
When the user stops moving the mouse he will see the light traveling from the input fiber
to its corresponding output fiber.
|
Free space optical interconnection newtwork using fixed and programmable prisms and N input
fibers and N output fibers arranged in a two-way 4F imaging setup.
The input prism are programmable whereas prisms in the focal plane are fixed. The role of each
input prism is to select the right fixed prism that allows the shift corresponding to the
required output fiber.
The most favorable wavefront to be injected into the single mode fiber
is in fact the wavefront which is issued from the same fiber.
Fiber n is connected to fiber n' when these two fibers becomes conjugated (in this
case where prisms are used : symmetrical).
Note : The beam is drawn according to geometrical optics.
|
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