Glossary

C-band

Introduction – Why C-band is so common? The C-band, ranging from 1530 nm to 1565 nm, stands for the convention …

O-band

The O-band, ranging from 1260 nm to 1360 nm, stands for the original band. It was “originally” con …

Erbium-Doped Fiber Amplifier (EDFA)

Erbium-Doped Fiber Amplifier (EDFA) is an optical amplifier used in the C-band and L-band, where the loss of t …

Stimulated and spontaneous emission

When an optical gain medium is pumped optically or electronically, an electron is pumped (excited) from a lowe …

Fiber laser

Fiber lasers are one class of solid-state lasers in which the gain medium is an optical fiber. Fiber lasers ha …

What is telecom optical wavelength bands ?

Fiber-optic communication is mainly conducted in the wavelength region where optical fibers have small transmi …

Light Emitting Diode (LED)

1. What is LED? LED is an abbreviation of Light Emission Diode, and is a device which emits light by flowing a …

What is semiconductor laser diode ?

1. Light emission of semiconductor laser A semiconductor laser (LD) is a device that causes laser oscillation …

What is superluminescent diode (SLD) ?

1. What is superluminescent diode (SLD)? The SLD (Superluminescent Diode) is a semiconductor device to emit lo …

What is ASE light source ?

1. What is ASE light source? ASE light source is one type of optical light sources, where the emission is gene …

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