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…
Thermocouple
Thermocouple A thermocouple consists of a pair of dissimilar conductors welded or fused together at one end to form the hot or measuring junction with other ends available for connection…
Comparison between Hydraulic and Pneumatic Systems
Comparison between Hydraulic and Pneumatic Systems In this post, the Comparison between Hydraulic and Pneumatic Systems is given in the tabular form. But before the table learns some basic definitions,…
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…
Stepper Motor : Types, Uses and Working Principle
Stepper Motor A special type of synchronous motor designed to rotate through a specific angle for each electrical pulse applied is known as a stepper motor. The specific angle through…
Kepler’s Laws in Satellite Communication
Kepler’s Laws of planetary motion Kepler’s laws apply quite generally to any two bodies in space that interact through gravitation. The more massive of the two bodies is referred to…
Gate Turn Off Thyristor (GTO) | switching performance
Gate Turn Off (G.T.O.) Thyristor Gate Turn Off (G.T.O.) Thyristor: A gate turn-off thyristor, a pnpn device, can be turned on like an ordinary thyristor by a pulse of positive…
Servomotor : AC Servomotor, DC Servomotor
Servomotor Servomotor: The servomotors are used to convert an electrical signal (control voltage) applied to them into an angular displacement of the shaft. They are normally coupled to the controlled…
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…