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Method for integrating modulator in feedback laser module

A laser module and feedback technology, applied in lasers, laser components, semiconductor lasers, etc., can solve the problems of low system efficiency, unstable performance, high power consumption, etc., achieve multiple varieties, improve long-term stability, and improve short-term stability degree of effect

Inactive Publication Date: 2007-06-27
浙江富春江通信集团有限公司 +1
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AI Technical Summary

Problems solved by technology

The output of the existing semiconductor laser is mostly multi-longitudinal mode, the spectrum is complex and not simple, and the performance is not stable; in addition, the modulator and the laser are not integrated in one module, which is large in size and high in power consumption, resulting in low system efficiency and affecting transmission performance

Method used

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Embodiment Construction

[0005] The present invention mainly solves the integrated manufacture of the modem and the feedback laser module: for the distributed feedback semiconductor laser, the grating is placed in the active area of ​​the semiconductor laser instead of the reflective surface for reflection. The optical oscillation with the same wavelength as the grating's natural wavelength is selected in the spectrum, thereby outputting single longitudinal mode laser light.

[0006] The light-emitting device in the feedback light source is the feedback laser, which can be roughly divided into 1310nm, 1550nm, CWDM, DWDM and other light sources according to different working wavelengths and uses. The first aspect of the present invention is based on the technology of the feedback type high-stability light source, by adopting precise secondary refrigeration technology and structural design technology such as photoelectric separation, the short-term stability and long-term stability of the output optical ...

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Abstract

Thisa invention relates to a method for integrating modulator in a feedback laser module characterizing in applying a secondary cooling technology and a photoelectric separation technology to increase the short and long term stability of output optical power, then applyihng a refrigerator to control the temperature and monitor its temperature with a thermistor to adjust and stabilize laser diode source in the applification of WDM, finally introducing passive optical applicances and laser module with the wavelength monitor and control ability to integrate and package a micro-optical demodulator module in a 14-feet butterfly high power feed back laser.

Description

Technical field: [0001] The invention relates to an optical device with high transmission performance in a 10Gbps optical transmission system, especially the design and manufacture of a DFB laser module integrated with a modulator. Background technique: [0002] 10Gbps optical transmission system has been applied, and its high transmission performance depends on advanced optical device technology. The application of optical transmission system in integrated network requires optical devices with high performance, low cost, small size and low power consumption, so that the system The overall cost, power consumption and volume are reduced, and the reliability is improved. The output spectrum of semiconductor laser can be single longitudinal mode or multi longitudinal mode. Most of the existing semiconductor lasers output multi-longitudinal modes, the spectrum is not simple, and the performance is not stable. In addition, the modulator and the laser are not integrated in one mo...

Claims

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Application Information

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IPC IPC(8): H01S5/026H01S5/00H04J14/02G02F2/00
Inventor 夏春生
Owner 浙江富春江通信集团有限公司
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