Wave-length controlling circuit of light communication wavelength division multiplexing

Abstract

The invention includes an optical transceiver, a wavelength division multiplexer, an optical amplifier, an optical monitoring channel and optical fiber. E1, and E3 are connected in series, and C6 and C7 firstly are connected in series, and then in parallel, and are connected to J1 in series to build optical transceiver. U3A, R4 are connected in series, and then are connected to U2B in series. U3B and D2 are connected in series. U3C and D3 are connected in series, and are connected to R10 and R11 in parallel to build a filter circuit, and are connected in series to a switch circuit composed of R5, R6, R7, C4, U3D, R8, R9, and C5. R1, U2A, M1, M2, M3, and M4 compose the input end of amplifier and are connected to the input end of wavelength division multiplexer. The optical fiber control channel composed of R2, R3, C3, E2, L1, L2, C2, U1, and D1 is connected to the output end of amplifier.

Description

Technical field: [0001] The invention relates to a control circuit of optical communication waves, in particular to a wavelength control circuit in optical communication wavelength division multiplexing equipment. Background technique: [0002] Wavelength division multiplexing (WDM) is to combine two or more optical carrier signals of different wavelengths (carrying various information) at the sending end through a multiplexer (also known as a multiplexer, Multiplexer) and couple them to the optical The technology of transmitting in the same optical fiber of the line; at the receiving end, the optical carriers of various wavelengths are separated by a demultiplexer (also known as a demultiplexer or demultiplexer, Demultiplexer), and then the optical receiver is used as a further processing to recover the original signal. This technology of simultaneously transmitting two or more optical signals of different wavelengths in the same optical fiber is called wavelength division...

AI Technical Summary

Problems solved by technology

Usually, an optical network needs to use 4 to 6 lasers that can be tuned throughout the network, but such tunable lasers are not yet available for commercial use.

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