All Questions
Tagged with optical-materials fiber-optics
15
questions
4
votes
1
answer
684
views
How do optical fibres work with high critical angles?
The critical angle is given by:
c = arcsin(n2 - n1)
For a typical optical fibre, it says on the web that refractive index (n2) for cladding is higher than that of the glass core (n1) but it's only a ...
- 153
1
vote
1
answer
147
views
Difference between seed and pump in chirped pulse amplifier
What is the difference between to seed an optical amplifier (such as Chirped Pulse Amplifier) and to pump it with a laser source?
- 35
4
votes
1
answer
61
views
Experimental detection of Anderson localization of light in 3D vs 2D
I have a question about the experimental realization of Anderson localization of light. I am a theorist, and have not worked much in optics, so please bear with me.
Anderson localization of light in ...
- 451
1
vote
1
answer
133
views
Phase shifted Optical Fiber Bragg grating Response
As we know there is a narrow notch in the reflectance spectrum of a Phase shifted FBG. We have Bragg condition for reflected band of any uniform FBG. My question is that, does anyone know any relation ...
- 46
11
votes
1
answer
356
views
How do non-mechanical solid-state optical switches work?
I am currently looking for a fiber-optical switch (FOS) in order to be able to change the light source of a spectrometer. As this will be used in harsh conditions, I was hoping to find a FOS with no ...
- 213
1
vote
1
answer
20
views
Is it possible to optimally transmit solar radiation by a system of multiple optical fibers?
As we all know, if an optical fiber is designed with the right material and properly bent, light can be transmitted along the fiber with very little attenuation.
Figure 1 shows the interaction of ...
1
vote
0
answers
88
views
Ovalization of a pvc pipe under a weight
I'm not sure if this is the right place to ask this question, but it came up in one of my physics courses so here goes.
I want to measure a weight using a Fiber Bragg Grating optic cable. Someone ...
- 31
0
votes
1
answer
984
views
How to calculate the dispersion parameter of a Fiber?
I am writing a presentation about DCF Fibers. From many articles i am reading, the dispersion parameter of Fibers are given. But it is not shown how it has been calculated.
For example ,in this ...
- 115
0
votes
1
answer
58
views
What is the gain control technique used in optics?
In optics, it is said that The gain bandwidth and gain flatness of Amplifiers are enhanced utilizing gain control techniques.What techniques are they referring to ?
I know the automatic volume ...
- 115
1
vote
1
answer
121
views
Is it possible to have an optical version of a greenhouse? With optical fibers?
Optical fibers transport light within them using internal reflection, but the light only enters from one end of the fiber. Is it possible to somehow have light entering from the sides of the fiber (...
- 325
1
vote
0
answers
73
views
Where can I purchase a funnel reflector? [closed]
I am designing a testing apparatus to contain the light emitted from a 40mm dia. xenon bulb and concentrate it at a 35mm dia. target.
My apparatus consists of a large funnel reflector: large hole dia....
- 189
1
vote
1
answer
445
views
The numerical aperture of optic fibre and angle of incidence
First
My college book contains the following passage:
the angle of incidence (relative to the fibre axis ) can't be too large else the ray would be refracting on the core\cladding boundary and ...
- 161
1
vote
1
answer
505
views
What determines how much partial reflection occurs at a boundary between two media?
Some thoughts I had about this are:
does it depends on the two media? Surely it must do. If so, what properties of the media dictate the extent of partial reflection?
this point is highly dependent ...
- 3,997
1
vote
1
answer
106
views
473 nm light through a single mode fiber designed to operate between 1500 and 1600 nm
Can we send light with 473 nm through a single mode fiber designed to operate between 1500 to 1600 nm spectrum? The radius of the fiber core is 4.25 micrometer, NA=0.12 and the single-mode cut-off is ...
1
vote
0
answers
876
views
How to calculate the Gain of EDFA amplifier? [closed]
I have co-propagating pump laser and tunable optical signal and I want to measure the Gain of EDFA Amplifier from the Optical Spectrum Analyser (OSA). I have measured first the signal power without ...
- 111