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Control device for implementing optical module wavelength locking and method thereof

A wavelength locking and control device technology, applied in lasers, laser parts, semiconductor lasers, etc., can solve the problems of adjacent channel signal crosstalk, large output wavelength shift, etc., and achieve the effect of improving stability and accuracy

Active Publication Date: 2009-02-18
ZTE CORP
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a control device and method for realizing optical module wavelength locking, which overcomes the disadvantage of large output wavelength shift of optical modules in the prior art, and solves the problem of signal crosstalk of adjacent channels in DWDM systems

Method used

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  • Control device for implementing optical module wavelength locking and method thereof
  • Control device for implementing optical module wavelength locking and method thereof
  • Control device for implementing optical module wavelength locking and method thereof

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Embodiment Construction

[0032] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, the present invention provides a control device for realizing wavelength locking of an optical module, and the control device includes:

[0034] (1) The automatic wavelength control unit 300 is configured to detect the output optical signal of the laser, and obtain a wavelength deviation signal for realizing wavelength locking.

[0035] Such as figure 1 and 3 As shown, the above-mentioned automatic wavelength control unit includes two parts:

[0036] One part is the optical path part, its such as figure 1 As shown, it includes an optical splitter, a back-facing optical power detector, a filter, and an optical wavelength detector; the output optical signal of the laser is divided into two optical signals through the optical splitter, and one optical signal passes through the back-facing optical power det...

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Abstract

The invention discloses a control device and method for implementing optical module wavelength lock, wherein the apparatus includes: a laser tube core temperature control unit, for obtaining a feedback signal of laser build-in negative temperature coefficient thermistor, and comparing the feedback signal with a presetting signal to generate a control signal inputted to a laser build-in thermoelectric cooler; a wavelength autocontrol unit, for detecting laser output optical signal, and obtaining a wavelength deviation signal for implementing wavelength lock; a superpose unit, for superposing the wavelength deviation signal onto the presetting signal and sending to the laser tube core temperature control unit. The invention overcomes the defect of large offset of optical module output wavelength, and resolves the problem of neighboring channel signal crosstalk of the DWDM system.

Description

technical field [0001] The invention relates to a technology for realizing automatic wavelength control of an optical transmitter in the field of optical fiber communication, in particular to a control device and method for realizing wavelength locking of an optical module. Background technique [0002] Wavelength division multiplexing technology is a new technology that transmits multiple optical signals at the same time through multiple specific wavelengths at intervals in a single fiber, thereby significantly improving the transmission capacity of a single fiber. With the further improvement of transmission capacity, the wavelength division multiplexing technology has experienced the development stage of coarse wavelength division multiplexing to dense wavelength division multiplexing. Dense Wavelength Division Multiplexing (abbreviated as DWDM, Dense Wave length Division Multiplexing) has attracted great attention because it can make full use of bandwidth resources. At ...

Claims

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Application Information

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IPC IPC(8): H01S5/0687
CPCH01S5/0687H01S5/06804H01S5/0612
Inventor 吕书生
Owner ZTE CORP
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