Questions tagged [optical-fibre]

A flexible, transparent, fine fibre made of extruded silica to function as a wave guide to transmitting signals through light

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Detector for a fiber optic gyroscope

I'm a navigation engineer, so I often have to deal with gyroscopes and their measurements. Out of curiosity, I've decided to build one myself and will give it a try with a Fiber Optics Gyroscope (FOG),...
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169 views

LED strip appropriate for fiber-optic cables

A project will use 20 fiber optic side-glow cables, 3mm-thick, with one controllable LED each. A WS2812 LED strip or similar would be perfect for the ease of controlling the LEDs, however all that I'...
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How can we measure the coupling loss in a fused fiber Y coupler?

I'm trying to understand how the (power) loss in optical fibre works and I'm having some trouble. This is a classic 50/50 fused fibre Y coupler. The output on port 2 is the same as port 3 (so half ...
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80 views

Custom fiber optic cable simulation

I am looking to create a custom & precise static optical distribution along the length of a fiber optic cable. The idea involves manipulating an optical fiber during manufacturing to produce the ...
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20 views

Elastic optical network

I am starting to study elastic optical network and I'm confused about the correlation between bandwidth channels supper channels does any one have a pdf file or slide of this subject? thank you so ...
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20 views

What's the name for this extra-slim variation of SMA-905 fiber-side connection?

In the following image the black fiber has 300 μm core and was curled into a ~10 cm loop inside a spectrometer I disassembled, while the blue one has 50 μm core and was supplied as a separate patch ...
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Q-value in APD photodetector

I try to calculate the Q value of APD photodetector with these parameters: $$R \hspace{0.1in} (response) = 1$$ $$M \hspace{0.1in} (magnification) = 10$$ $$k \hspace{0.1in} (ionization \hspace{0.1in} ...
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36 views

How to simulate a MMF fiber in COMSOL Multiphysics?

I am a complete newbie to COMSOL multiphysics, but I have to study and simulate the effects of temperature on multimode optical fibers (MMF) using COMSOL multiphysics for my Bachelor's thesis. I know ...
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Transmitting .mp4,.bin,.txt files with on off keying OOK (optical communication)

How do you implement OOK to transmit mp4 files etc. For instance i have LED and a video file to transmit. How do you take the video convert it to binary, send it via the LED recieve it via the ...
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30 views

How to measure the amount of light emitted back from a fiber optic cable?

I would like to build a setup where I use a light source to emit a signal over a fiber optic cable, and then measure the amount of light that is emitted back, e.g. by blocking/opening the other end of ...
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46 views

How to Work with a Optical Fiber Ribbon

I got a piece of fiber optical cable that is in the form of a "ribbon cable" (see pictures). I have seen tools and procedures for making connections on a single strand of optical fiber. I would like ...
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Nanopower Fiber Optics / MOSFET Switch

I'm a newbie at designing at the nanopower level, hence my question. In this circuit, I have plastic fiber optical inbound signal that drives D1 photodiode, whose dark current is extremely low (tens ...
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41 views

How does a fiber optic receiver converts the optical signal to an electrical signal

A fiber optic receiver needs to convert the incoming optical signal to an electrical signal so it can be sampled. How is this achieved in practice? I believe a photodiode is used, but would a ...
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81 views

Switch DC/DC Converter through Fiber Optic Signal

I need to send a signal through fiber optic to switch a DC/DC Converter (I want it to be on when there is photocurrent, and off when there isn't), I can't use a normal cable because I want to do that ...
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40 views

differences between photelectric amplifier and optical amplifier?

i'm researching about fiber optic sensor and stumbled upon a question regarding about the amplifier. I've read in the internet that optical amplififer contained many type such as EDFA,semi-conductor ...
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161 views

Low cost low speed fiber optic connection for embedded applications

I would like to use a fiber connection to send data between two nodes. The nodes would typically have a 8 or 32 bit micro controller. I need data rate of 2 Mbps or higher and distance is about 100 ...
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126 views

How to use Arduino Uno to Process Signal from Leuze LV463 Optical Fiber Sensor

I'm attempting to use an Arduino Uno to receive the output from a Leuze LV463 Optical Fiber Sensor, but I'm a little confused as to which pin to use on the Arduino. The thing that is throwing me off ...
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64 views

Place of matched filter in fiber optic communication

In short-haul communication via optical fibers, we use photodiodes (PD) to detect the light. So if we want to use a matched filter, should we use it before the PD (optical domain) or after the PD (...