Methods for transmitting signals via optical fiber

There are two techniques of division multiplexing wavelength which suggests transmitting signals via optical fiber. They can be DWDM and CWDM.

DWDM--Dense Wavelength Division Multiplexing means division multiplexing in dense wave longitude. DWDM transmission technique through optical fiber while using the C band (1550 nm). What a multiplexing method nearly the same as the frequency division multiplexing may be used in electromagnetic transmission means. Several carrier signals (optical) are transmitted by a single optical fiber using different wavelengths of laserlight each. Each optical carrier is really an optical channel that might be treated independently of other channels that share the medium (fiber optic) and contain various types of traffic. Like this can multiply the effective bandwidth from the optical fiber, so as to provide bidirectional communications. That is the very attractive transmission way of telecom operators by permitting it to increase capacity without additional wiring or trenching. To transmit using DWDM it takes from complementary devices: a transmitter side muxer y demuxer in a receiver side it. Unlike him CWDM, DWDM is within numbers mayor Get optical channels lowering the chromatic dispersion associated with every channel through it using a laser Mayor Quality, baja fiber dispersion through him having DCM modules Dispersion Compensation Modules. In this MANERO you can easily combine more channels reducing space between he ello. Currently it pueden get 40, 80 to 160 optical channels separated 100 GHz, 50 GHz to 25 GHz respectively.

CWDM--Coarse Wavelength Division Multiplexing originally was fairly generic, and meant a number of different things. Generally, these materials shared the fact picking out channel spacings and frequency stability was in a way that erbium doped fiber amplifiers (EDFAs) cannot provide. Leading to a relatively recent ITU standardization from the term, one common meaning for coarse WDM meant two (or alternatively more) signals multiplexed onto one particular fiber, where one signal what food was in the 1550 nm band, also, the other on the 1310 nm band. CWDM Multiplexer Modules may be found in 4, 8 and 16 channel configurations. These modules passively multiplex the optical signal outputs from 4 or further electronic products, send them over 1 optical fiber and be able to de-multiplex the signals into separate, distinct signals for input into electronic products at the opposite end of the fiber optic link. The Coarse Wavelength Division Multiplexing-CWDM Mux/demux would be a flexible plug-and-play network solution, which enables service providers and enterprise companies to affordably implement examine point or ring based WDM optical networks. CWDM Mux/demux is modular, scalable and it's perfectly fitted to transport PDH, SDH / SONET, ETHERNET services over WWDM, CWDM and DWDM in optical metro edge and access networks.

For an exciting new year gift, here's some imformation associated with a fiber optic machine in your case. It could be important within you work--a variable optical attenuator. Optical variable attenuator can be described as double window (1310/1550nm) of passive components. The variable optical attenuator could continually and variably attenuate the sunshine intensity with the optical fiber transmission. Variable fiber optic attenuator can aid simulate distance or actual attenuation through the fiber optic testing work by inserting a calibrated attenuation towards the link. Along with variable fiber optic attenuator, technicians could verify the power margin received by testing the fiber optic link power budget. Variable fiber attenuator can assist user vary light power injected on a light within the optical fiber. Important parameter of variable fiber attenuator include its insertion loss, reflection loss and attenuation range. We supply ST, FC, SC, LC variable fiber optic attenuators with APC, UPC type. Attenuation range available originates from 1dB to 30dB.