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Bend waveguide dual-wavelength laser device used for all-optical clock recovery

A dual-wavelength laser and curved waveguide technology, which is applied in the direction of optical waveguide light guides, semiconductor lasers, semiconductor laser devices, etc., can solve the problems of waveguide effective refractive index difference, cost or difficulty, and affect effective refractive index, etc., to achieve simple manufacturing process , good application prospects, low cost effect

Inactive Publication Date: 2012-05-16
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For TS-DFB, a key technical link is to make the lasing wavelengths of the two DFB lasers have a certain interval. The current common practice includes: using electron beam exposure to make the grating periods of the two DFB lasers different; Or try to make the effective refractive index of the waveguides of the two DFB lasers different, for example, the width of the ridge waveguide of the two DFB lasers is different in the order of μm, thus affecting the effective refractive index
These practices are both costly and difficult in terms of technology, which affects their practical application.

Method used

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  • Bend waveguide dual-wavelength laser device used for all-optical clock recovery
  • Bend waveguide dual-wavelength laser device used for all-optical clock recovery
  • Bend waveguide dual-wavelength laser device used for all-optical clock recovery

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Embodiment 1

[0038] figure 2 It is a curved waveguide dual-wavelength laser integrated with two DFB lasers for all-optical clock recovery. InGaAsP / InP-based integrated optoelectronic devices with working wavelength in the 1550nm band, through non-coherent mode or coherent mode to achieve all-optical clock recovery.

[0039] The device integrates two distributed feedback lasers on one chip, which are the first DFB laser segment 17 and the second DFB laser segment 18 respectively.

[0040] First, the epitaxial materials of the device are as follows. Through the metal organic chemical vapor deposition (Metal Organic Chemical Vapor Deposition, MOCVD) method, first do the first epitaxy on the n-type substrate material, grow the n-type InP lower cladding layer, and form the substrate 6 (thickness 200nm) containing the lower cladding layer , the doping concentration is about 1×10 18 cm -2 ), and then epitaxially grow a 100nm-thick non-doped lattice matching InGaAsP waveguide layer 7 (photolu...

Embodiment 2

[0044] image 3 It is a curved waveguide dual-wavelength laser for all-optical clock recovery that integrates two DFB lasers and a phase modulation section. InGaAsP / InP-based integrated optoelectronic devices with working wavelength in the 1550nm band, through non-coherent mode or coherent mode to achieve all-optical clock recovery.

[0045] The device integrates two distributed feedback lasers on one chip, namely the first DFB laser segment 17 and the second DFB laser segment 18 , and also integrates a phase modulation segment 20 .

[0046] First, the epitaxial materials of the device are as follows. Through the metal organic chemical vapor deposition (Metal Organic Chemical Vapor Deposition, MOCVD) method, first do the first epitaxy on the n-type substrate material, grow the n-type InP lower cladding layer, and form the substrate 6 (thickness 200nm) containing the lower cladding layer , the doping concentration is about 1×10 18 cm -2 ), and then sequentially grow 100nm t...

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Abstract

The invention discloses a bend waveguide dual-wavelength laser device used for all-optical clock recovery, belonging to the technical field of photoelectronic devices in the photo-communication field. The photoelectronic device integrates two distributed feedback semiconductor laser devices on the same substrate, and a waveguide layer, a multiple quantum well active layer, a grating layer, an upper waveguide layer, an upper cladding and an ohmic contact layer are extended sequentially on the substrate. The two distributed feedback semiconductor laser devices are provided with grating structures with the same period and the waveguides thereof are provided with a certain bending angles, thus laser wavelengths of the two distributed feedback semiconductor laser devices have certain difference and can be further applied to the all-optical clock recovery. The invention has novel structure, simple manufacturing technology, and favorable application prospect in future high-speed communication field.

Description

technical field [0001] The invention belongs to the technical field of optoelectronic device preparation in the field of optical communication, and in particular relates to an integrated optoelectronic device for all-optical clock recovery. Background technique [0002] The invention is a curved waveguide dual-wavelength laser used for all-optical clock recovery, which can be used in optical digital communication networks. It extracts the optical clock signal synchronously from the received data signal, and this process is called optical clock recovery. The extracted optical clock signal can be used as a time reference for subsequent signal processing, so as to be used in signal processing processes such as optical 3R regeneration, multiplexing / demultiplexing, and optical switching. [0003] At present, the relatively mature optical clock recovery technology in optical communication network is realized based on the optical-electrical-optical process. That is to say, the op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/40H01S5/068H01S5/34G02B6/12
Inventor 孙长征黄缙熊兵罗毅
Owner TSINGHUA UNIV