C and L waveband wavelength selecting switch, as well as implementation method and processing unit thereof

A technology of wavelength selective switch and processing unit, which is applied in optical components, optical waveguide coupling, light guide, etc., to achieve the effect of simple structure and reduced system cost

Active Publication Date: 2013-07-10
WUHAN POST & TELECOMM RES INST CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is how to solve the problem of how to re

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  • C and L waveband wavelength selecting switch, as well as implementation method and processing unit thereof
  • C and L waveband wavelength selecting switch, as well as implementation method and processing unit thereof
  • C and L waveband wavelength selecting switch, as well as implementation method and processing unit thereof

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Embodiment Construction

[0034] The C+L-band wavelength selective switch provided by the present invention realizes the dynamic configuration of C-band and L-band wavelength resources with only one spatial light modulator through ingenious design on the optical path, and transmits them to designated output ports respectively. The present invention will be described in detail below with the specific embodiment of a 1×4 wavelength selective switch and in conjunction with the accompanying drawings.

[0035]Apparently, the technical solution provided by the present invention is not limited to 1×4 wavelength selective switch, and those skilled in the art can fully apply to wavelength selective switches with more ports by reasonably selecting corresponding components according to needs.

[0036] figure 1 It is a schematic structural diagram of a C+L band wavelength selective switch (1×4) shown in a specific embodiment of the present invention, figure 2 for figure 1 The schematic diagram of the processing...

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Abstract

The invention discloses a C and L waveband wavelength selecting switch, as well as an implementation method and a processing unit thereof, wherein the processing unit comprises an input-output fiber array, a polarization diversity element, a cylindrical surface reflector, a collimating lens array, a grating array and a programmable spatial light modulator; and a C waveband input light signal and an L waveband input light signal enter respectively the polarization diversity element through the input-output fiber array for polarization state adjustment, are reflected by the cylindrical surface reflector, collimated by the collimating lens array, expanded by the grating array according to different wavelengths, reflected to the programmable spatial light modulator for adjustment on magnitude and phase through the collimating lens array and the cylindrical surface reflector, and then returned to the grating array to be synthesized into a C waveband output light signal and an L waveband output light signal through the cylindrical surface reflector and the collimating lens array, and the C waveband output light signal and the L waveband output light signal are output through a designated output optical fiber port after the polarization state is restored. According to the C and L waveband wavelength selecting switch, as well as the implementation method and the processing unit, only one programmable spatial light modulator is used for realizing dynamic allocation of a C waveband wavelength resource and an L waveband wavelength resource through a skillful design of a light path, the structure is simple and the system cost is greatly reduced.

Description

technical field [0001] The invention relates to a wavelength selective switch, in particular to a C+L band wavelength selective switch and its realization method and processing unit. Background technique [0002] In recent years, communication services (including multimedia services such as voice, data and video images) have been developing year by year, especially the rapid growth of data and video transmission business volume, and the requirements for transmission capacity, speed, distance and transmission quality of optical networks are constantly increasing , but also pay special attention to the flexibility of optical network construction and the reduction of construction and operation and maintenance costs. [0003] DWDM dense wavelength division multiplexing system is the most common optical layer networking technology at present. The transmission capability of tens of wavelengths or even hundreds of wavelengths can be realized through the multiplexer / demultiplexer. H...

Claims

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Application Information

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IPC IPC(8): G02B6/35G02B6/293
Inventor 游善红余少华杨奇谢德权李淼峰
Owner WUHAN POST & TELECOMM RES INST CO LTD
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