optical fiber communication block diagram

Optical Fiber Communication Block Diagram

The optical fiber consists of three main elements:

Transmitter: An electric signal is applied to the optical transmitter. The optical transmitter consists of driver circuit, light source and fiber flylead.
- Driver circuit drives the light source.
- Light source converts electrical signal to optical signal.
- Fiber flylead is used to connect optical signal to optical fiber.
Transmission channel: It consists of a cable that provides mechanical and environmental protection to the optical fibers contained inside. Each optical fiber acts as an individual channel.
- Optical splice is used to permanently join two individual optical fibers.
- Optical connector is for temporary non-fixed joints between two individual optical fibers.
- Optical coupler or splitter provides signal to other devices.
- Repeater converts the optical signal into electrical signal using optical receiver and passes it to electronic circuit where it is reshaped and amplified as it gets attenuated and distorted with increasing distance because of scattering, absorption and dispersion in waveguides, and this signal is then again converted into optical signal by the optical transmitter.
Receiver: Optical signal is applied to the optical receiver. It consists of photo detector, amplifier and signal restorer.
- Photo detector converts the optical signal to electrical signal.
- Signal restorers and amplifiers are used to improve signal to noise ratio of the signal as there are chances of noise to be introduced in the signal due to the use of photo detectors.

For short distance communication only main elements are required.

Source- LED

Fiber- Multimode step index fiber

Detector- PIN detector
For long distance communication along with the main elements there is need for couplers, beam splitters, repeaters, optical amplifiers.

Source- LASER diode

Fiber- single mode fiber

Detector- Avalanche photo diode (APD)

Comments

Design Engineer at Infineon Bangalore

Hello Dear Readers, Currently at Infineon Bangalore vacancy for the Design Engineer role. Design analog and mixed-signal modules in CMOS and Smart PowerTechnologies, with a particular focus on achieving high-efficiency power conversion for applications using GaN devices; In your new role you will: Design analog and mixed-signal modules in CMOS and Smart PowerTechnologies, with a particular focus on achieving high-efficiency power conversion for applications using GaN devices; Design and verify pre-silicon analog/mixed-signal integrated circuit blocks, including incorporating features for testing and quality assurance, and providing support for top-level integration; Assist in defining the requirements for analog and mixed-signal blocks,aligning them with IP Module architecture, and ensuring compliance with requirements through documentation; Estimate effort and planning design work packages to meet project milestones; Provide essential support to physical design ...

Tutorial on EasyEDA desktop software for PCB and schematic design

In this article, I am going to write a tutorial on how to use EasyEDA desktop application for creating a schematic and for PCB design. One of best advantage of this software is that you can create design offline and can automatically synchronize your design with your online EasyEDA account. It can be used for circuits simulation, PCB deign and electronics circuits design. You can download EasyEDA desktop application by clicking on following link and it will work on windows 7 or its greater version. They are also releasing soon offline application OSX and Linux users. So keep visiting their website for more information. https://easyeda.com/page/download So let’s start and see how to design a schematic and PCB using EasyEDA offline desktop application. So first of all lets see how to create a schema...

Engineer II - Analog Design Engineering at Microchip

Hello Dear Readers, Currently at Microchip vacancy for Engineer II - Analog Design Engineering role. Job Description: The Mixed Signal Development Group is responsible for delivering analog, digital and mixed-signal IP to divisions within Microchip. We work with leading edge CMOS processes to produce analog integrated circuits for wireline applications. From 112Gb/s+ SERDES to high-speed FEC engines, we enable technology that allows Microchip’s products to interface to the outside world. Job Descriptions: As a member of the Mixed-Signal Development Group, the candidate will be supervised by a team leader/manager, and be engaged in the design of SERDES/DSP blocks, and other high-speed Digital Signal Processing blocks. This will involve taking a design from initial concept to production form. Throughout you will be mentored and coached by experienced engineers and be exposed to Microchip's Best-In-Class engineering practices. Job Responsibilities: Ramping up o...

Search This Blog