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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Identification of fibre-to-LED circular connector (for car LED lights)
I have purchased some car LED lights for my vehicle, but the optic cable is too short. I need to buy some sort of extension and need to know what this piece on the right is called (see image below). I ...
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Laser communication system to transmit Audio
The audio in these two circuits is only transmitted when they are both connected to the same battery (Vcc), and only the laser control audio level not the transmitting process.
When I connect the ...
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What is the transfer function of electroabsorption modulators?
Can anyone give me a reference that I may find a closed-form formula for the output electric field (not power) in terms of the input small-signal electrical waveform (not input power) of an ...
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Optical TOSLINK for high voltage isolation up to 2kV?
When using optical TOSLINK cable for isolation, would there be a problem in using it for measurements up to 2kV? I don't envisage any problems, since the optical cable is made of non-conducting ...
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Number of wavelengths in a multiple node optical fiber topology
I'm given a topology with several nodes that works bidirectional, so bit rates must be multiplied x2 (topology is attached at the bottom of the message) and a table with the required bit rates between ...
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Connection of two devices
I need to design an Ethernet interface.
Requirements: It should have two RJ45 connectors at 1Gbps data rate and two fiber-optic at 1Gbps rate.
The system has two SoMs (Kria K26) and each one should ...
user220456
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Operating QSFP-28 at data rate other than 25Gbps per lane
We are designing a custom board for AD9082 and serdes of which are mapped to QSFP-28 port.This board will communicate with FPGA board using QSFP-28 module.
AD9082 and FPGA will linkup using JESD204C ...
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How do single-optical-fiber bidirectional communications work?
In the past, I have dealt with fiber optic network communication devices that utilize two fibers, RX and TX, each being dedicated to one direction. I was under the impression that two fibers are ...
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Interface for isolated UART transmission using optical TOSLINK cable
For UART transmission in a noisy environment, I am contemplating using low-cost optical TOSLINK cable with a dedicated optical transmitter and receiver, e.g PLT133 and PLR135. Is a special interface ...
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FPT100B alternative [closed]
I have a board that uses an FPT100B and a 271 chip as fibre optic receiver. The fibre optic receives red light, not IR. The FPT100B is not working. I am pretty clueless as to what I can use as an ...
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Insulation safety ratings (working and withstand voltage) of fiber optics cables
I'm trying to build a high voltage optocoupler to implement galvanic isolation between a high voltage supply and its control signals. Since the working voltage is several kilovolts, it's beyond the ...
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Calculating minimum incident optical power when BER is given
I'm trying to solve this problem:
A silicon photo-diode has a responsivity of 0.6 A/W at a wavelength of 850 nm. Determine the minimum incident optical power at the photo-diode at this wavelength in ...
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Various types of multimode fibers
I have recently been studying fibers in school. I know there are 2 main types of fibers, singlemode and multimode. I know that single-modal are the most used for long journeys and because they have a ...
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Optical Receivers and Amplifiers
I have been doing some past papers for a university module I am studying. I am not from an electrical engineering background so don’t really know how to attempt the question attached. I would really ...
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The field in a waveguide at exactly the cut-off frequency
Can anyone explain to me qualitatively, what kind of field exists inside a waveguide at EXACTLY the cut-off frequency?
I would be grateful if an explanation was given about waveguides with metalic ...
