Slow light adjustable time delayer for wideband signal based on coupling cavity and vertical cavity surface emitting laser

A technology of vertical cavity surface emission and broadband signal, which is applied in the field of broadband signal slow-light adjustable delayer, can solve the problems of narrow peak bandwidth of delay spectrum line, slow-light delay of bandwidth-limited signal, transmission signal distortion, etc., to achieve Huge application prospects, increased delay, easy to integrate effects

Inactive Publication Date: 2012-02-15
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

This phenomenon reflects that the delay spectrum line of VCSEL has a sharper peak and a narrower bandwidth. The reason for this phenomenon is that the delay bandwidth is limited by the line of the F-P cavity due to the resonant cavity formed by the high refl

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  • Slow light adjustable time delayer for wideband signal based on coupling cavity and vertical cavity surface emitting laser
  • Slow light adjustable time delayer for wideband signal based on coupling cavity and vertical cavity surface emitting laser
  • Slow light adjustable time delayer for wideband signal based on coupling cavity and vertical cavity surface emitting laser

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Embodiment Construction

[0018] The implementation of the present invention will be further described below in conjunction with the accompanying drawings. Apparently, the described examples are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] An embodiment of the present invention provides a broadband signal slow light adjustable device based on a coupled cavity vertical cavity surface emitting laser, which can be applied to the slow light delay field of broadband signals by expanding the delay bandwidth of a VCSEL. The embodiment of the present invention also provides a corresponding slow light delay system. Let's describe each in detail.

[0020] The structure of the CC-VCSEL with a time delay of 1550nm is as follows figure 1 As shown, the whole cavity is composed of acti...

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Abstract

The invention discloses a slow light adjustable time delayer for a wideband signal based on a coupling cavity and vertical cavity surface emitting laser. The method adopted by the invention is realized in such a way that a coupling cavity formed by coupling an edge cavity and an edgeless cavity is constructed by changing a structure of a DBR (Distributed Bragg Reflector) at one side of the coupling cavity and vertical cavity surface emitting laser (CC-VCSEL) and can be used for effectively broadening delay bandwidth of the device. According to the technical scheme of the invention, the slow light time delay of the wideband signal can be effectively adjusted by adjusting bias current of the CC-VCSEL and the light power or wavelength of an input signal. The slow light adjustable time delayer disclosed by the invention has the advantages of work under the condition of room temperature, simpleness in operation, easiness in integration and the like.

Description

technical field [0001] The invention relates to the technical fields of optical buffering, optical sensing, image processing and the like in an all-optical packet switching network, and in particular to the field of broadband signal slow-light adjustable delayers in optical fiber communication systems. Background technique [0002] Today, human production and life are constantly moving towards digitization and informatization, and it is urgent to realize accurate, high-speed, and large-capacity information storage and transmission. Traditional communication technology is increasingly unable to meet people's needs, and all-optical storage and transmission of information has gradually become a hot spot of concern today. [0003] At present, in the field of optical storage, information storage can be realized by controlling the buffer length and group velocity of optical pulses. According to these two methods, people are gradually exploring solutions to realize all-optical sto...

Claims

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Application Information

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IPC IPC(8): G02F1/35H01S5/06H04B10/155
Inventor 马雅男罗斌叶佳易安林
Owner SOUTHWEST JIAOTONG UNIV
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