Glossary

Similar to a coupler. Allows for connecting with fiber

Bi-Directional is single fiber dual-way transmission.it need transmit and receive wavelength is cannot same.

The acronym stands for Coarse Wavelength Division Multiplexing. The term "coarse" refers to the wavelength spacing between channels. CWDM utilizes laser signals that differ in increments of 20 nm. A total of 18 different channels are available — with a wavelength range from 1270 nm to 1610 nm.

coherent optical transmission is a technique that uses modulation of the amplitude and phase of the light, as well as transmission across two polarizations, to enable the transport of considerably more information through a fiber optic cable.

Dense wavelength division multiplexing (DWDM) is a technology that puts together -- multiplexes -- data signals from different sources so they can share a single optical fiber pair while maintaining complete separation of the data streams. Each signal is carried on a separate light wavelength; the dense part of DWDM refers to the fact that 96 separate wavelengths, each about 0.8nm wide

Demux is the reverse of the multiplex (MUX) process – combining multiple unrelated analogs or digital signal streams into one signal over a single shared medium, such as a single conductor of copper wire or fiber optic cable. Thus, demux is reconverting a signal containing multiple analogs or digital signal streams back into the original separate and unrelated signals.

Conventional single-mode fibers are characterized by large (~ 5-6 μm) core radii and zero-dispersion occur around 1300 nm. Operation around λ0 at 1300nm thus leads to very low pulse broadening, but the attenuation is higher than at 1550 nm. Thus, to exploit the low-loss window around 1550nm, new fiber designs were developed that had zero-dispersion around the 1550nm wavelength region

Erbium-Doped Fiber Amplifier (EDFA) is an optical amplifier used in the C-band and L-band, where the loss of telecom optical fibers becomes lowest in the entire optical telecommunication wavelength bands.

A glass or plastic fiber that carries the light transmission. Light transmission is the data being transmitted.

Gain generally refers to the components, circuits, equipment or systems, the degree of increase in current, voltage, or power, to decibels (dB) number to specify