Two dimension array integrated module of wavelength selective distribution feedback laser

Abstract

Using indium phosphide / indium - gallium - arsenic - phosphor material system, the IC module of 2D array of laser includes optical amplifier, Y type coupler, and 2 * 2 distributed feedback laser array connected in sequence. The 2 * 2 distributed feedback laser array prepares four Bragg gratings with different cycles arranged in 2 * 2 matrixes on up waveguide layer. Advantages of the invention are that four selectable wavelengths with wavelength interval as 20nm are provided to meet requirement of channel interval in rarefaction wavelength division multiplex. Comparing with traditional technique for opto-electronic integrative module, the disclosed preparation technique is equable simple, convenience, easy of operation. Moreover, the disclosed integrative module is easy to be integrated to other opto-electronic devices such as modulator, and pattern converter etc.

Description

technical field [0001] The invention relates to the technical field of semiconductor optoelectronic integration, in particular to a two-dimensional array integrated component of a wavelength-selectable distributed feedback laser. Background technique [0002] The current optical fiber communication system adopts wavelength division multiplexing technology, and sparse wavelength division multiplexing technology (CWDM) is an important multiplexing technology for metropolitan area network and fiber-to-the-home. Simplicity and low cost are the basic requirements for optoelectronic devices used in sparse wavelength division multiplexing communication networks. In the standard formulated by ITU-T, the channel multiplexing interval of the sparse wavelength division multiplexing communication network is as wide as 20nm, and the light source is required to have a wavelength selectivity with an interval of 20nm, and the cost is low and the performance is stable. Semiconductor optoele...

AI Technical Summary

Problems solved by technology

12 gratings with different periods are produced by expensive electron beam scanning exposure, which is complex and costly

The packaging structure of the device adopts hybrid integration, using external couplers and optical isolators, compared with monolithically integrated components, the cost is high and the volume is large

Document 2 (IEEE P.T.L., 11, 1999, 51) proposed another monolithically integrated array of 6 DFB lasers, which also uses an electron beam exposure system to make gratings, which is costly

Moreover, the output wavelength interval of these two devices is only a few nanometers, which does not meet the channel spacing standard (20nm) of sparse wavelength division multiplexing, and is not suitable for sparse wavelength division multiplexing optical communication systems

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