Tunable Optical Filters
Tunable Optical Filters Tunable optical filters are active components that are mostly used at the receiver end of a WDM system. As the name suggests, its main function is to…
Transmission Losses in Optical Fiber Cable
Transmission Losses Various types of optical signal transmission losses in optical fiber cables result in less output power than required, thereby reducing the overall system capacity, net transmission bandwidth, transmission…
Erbium-Doped Fiber Amplifiers (EDFAs)
Erbium-Doped Fiber Amplifiers (EDFAs) Erbium-doped fiber amplifiers (EDFAs) make use of rare-earth elements such as erbium (Er3+) as amplification medium. It is doped into the fiber core during the manufacturing…
Raman fiber amplifier (RFA)
Raman fiber amplifier (RFA) A Raman fiber amplifier (RFA) is based on an intrinsic non-linearity present in the form of a stimulated Raman scattering (SRS) mechanism. When a high-power optical…
Semiconductor Optical Amplifiers (SOA)
Semiconductor Optical Amplifiers (SOA) A semiconductor optical amplifier (SOA), also known as a laser amplifier, is an active medium of a semiconductor laser. In other words, an SOA is a…
Optical Amplifier | Power Amplifier, In-line, Pre-amplifier
Optical Amplifier Optical Amplifier: An optical amplifier is a widely used device in optical fiber communications for the purpose of amplification the optical signal generated by an optical transmitter. The…
Fiber Fabrication Methods or Techniques
Fiber Fabrication Methods Fiber Fabrication Methods or Techniques: Fabrication of all-glass fibers is a two-stage process. The first stage consists of producing a pure glass and converting it into a…
Optical Fiber Connector and types
Optical Fiber Connector Optical Fiber Connector is a mechanism or technique used to join an optical fiber to another fiber or to a fiber optic component. A fiber-optic connector is…
Optical Fiber Splicing
Optical Fiber Splicing Optical Fiber Splicing: A permanent or semi-permanent connection between two individual optical fibers is known as Optical Fiber Splice, and the process of joining two fibers is…
Difference between Homodyne and Heterodyne Detection
The basic difference between Homodyne and Heterodyne Detection is based on the signal carrier and local oscillator frequency. In homodyne detection signal carrier and local oscillator frequency is equal i.e.…