Wavelength lock and wavelength locking device with same

Abstract

The invention discloses a wavelength lock and a wavelength locking device with the same. The wavelength lock comprises a first optical splitter, an F-P etalon, a second optical splitter, a first detector and a second detector, wherein the first optical splitter, the F-P etalon and the second optical splitter are located on an input-output optical path sequentially. The first optical splitter splits an input signal light beam into two beams, the first detector receives one beam and detects the luminous power of the beam, the other beam is filtered by the F-P etalon and arrives at the second optical splitter, the second optical splitter splits received signal light into two beams, the second detector receives one beam and detects the luminous power of the beam, the other beam is output along the input-output optical path, and the wavelength lock locks the wavelength according to results detected by the first detector and the second detector. The wavelength locking device comprises the wavelength lock. The wavelength lock and the wavelength locking device with the same are novel and simple in structures and capable of achieving wavelength locking and filtering.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a wavelength locker and a wavelength locking device thereof. Background technique [0002] At present, the optical channel spacing of the DWDM system is moving from 100GHz to 50GHz or even 25GHz. The system puts forward more and more strict requirements on the laser used. It is necessary to adopt effective wavelength stabilization technology to improve the wavelength stability of the laser. The wavelength locker is suitable for this demand and is the key device of the dense wavelength division multiplexing system. [0003] A typical wavelength locker optical path structure is as follows figure 1 As shown in the middle box, after the signal light from the laser is input into the wavelength locker device, it is divided into two parts by a splitter, one part directly enters the first detector as a reference signal, and the other part passes through the wavelength selection filt...

AI Technical Summary

Problems solved by technology

[0004] The wavelength locker provided in the prior art can also filter while realizing wavelength locking, but the filtering function is relatively less used

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