A Broad Spectrum Multi-Wavelength Fabry-Perot Laser

Abstract

The invention discloses a wide-spectrum multi-wavelength Fabry-Perot laser, wherein the active layer of the first quantum well and the active layer of the second quantum well are in the same layer by means of butt growth, and is realized by corroding part of the contact layer. Current injection isolation of two quantum wells. Aiming at the problem of narrow spectral width and few wavelength channels of single quantum well structure FP laser, the patent of the present invention adopts the method of butt-growing two different bandgap quantum wells to increase the gain bandwidth of FP laser and realize large spectral width and multiple wavelength channels The output, compared with the method of mixing quantum wells in the background technology, can avoid the performance degradation of the multi-quantum well material caused by rapid annealing; and the butt end faces are designed with inclined end faces to reduce the reflectivity of the butt end faces.

Description

technical field [0001] The invention belongs to the field of optoelectronic devices, in particular to a wide-spectrum multi-wavelength Fabry-Perot (FP) laser. Background technique [0002] Dense wavelength division multiplexing (DWDM) technology can realize the transmission of different wavelength channels in the same optical fiber, greatly improving the transmission capacity of the optical fiber transmission system, and has very great practical value. As the number of wavelength channels in a DWDM system continues to increase, the number of individual laser diodes required is large, and the cost and complexity of the transmitter is also increasing. In order to solve these problems, people began to study some alternative technologies to obtain multi-wavelength operation from a single laser source. FP lasers have become an important source of choice in DWDM systems due to their simple structure, low manufacturing cost, and multi-wavelength longitudinal mode output. [0003] ...

AI Technical Summary

Problems solved by technology

[0007] Aiming at at least one limitation and defect of the existing scheme, the purpose of the present invention is to provide a wide-spectrum multi-wavelength Fabry-Perot (FP) laser, by growing two kinds of different bandgaps in the active region of the laser quantum well The quantum well layer not only solves the problem of small gain bandwidth and few output wavelength channels, but also effectively controls the thickness of the entire laser chip. The structure is simple, the manufacturing process is stable, and the cost is low, which is conducive to improving the performance of quantum wells

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