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Wavelength-selective optical switch

A technology of wavelength selection and optical switching, which is applied to the coupling of optics, optical components, and optical waveguides, can solve the problems of non-interference switching function, wavelength resolution, increased cost and volume, etc., so as to achieve simple design and reduce Cost, effect of reducing process difficulty and cost

Active Publication Date: 2012-07-18
BROADEX TECH
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  • Application Information

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Problems solved by technology

However, since the reflection extraction part given in this patent is an optical circulator, it does not have the ability to distinguish wavelengths
Therefore, it is also necessary to use tunable filters or demultiplexing arrays to realize the separation of wavelengths, and then realize the channel monitoring function (obtaining energy of different wavelengths), which will undoubtedly increase the cost and volume
In addition, this wavelength selector does not yet have interference-free switching

Method used

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Examples

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Embodiment Construction

[0035] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0036] The invention relates to a wavelength selective switch with interference-free switching and channel monitoring functions, including an optical input / output part, a polarization conversion part, a light splitting part, an attenuation reflection part, a wavelength channel opening and closing unit, and a mirror driving part , Channel Extraction Department, Channel Monitoring Department, and Control Department. The light in...

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Abstract

The invention relates to a wavelength-selective optical switch which comprises a polarization conversion part, an attenuation reflectance part, a wavelength channel opening and closing unit and a reflecting mirror driving part. The polarization conversion part is arranged between an light inputting / outputting part and an light dividing part; the attenuation reflectance part comprises one-dimensional MEMS (micro-electronic-mechanical) reflecting mirror arrays, is arranged on the surface of the output end of the light dividing part and used for reflecting a part of wavelength channel irradiated in by the light dividing part; the wavelength channel opening and closing unit comprises a liquid crystal assembly and is used for controlling the opening and the closing of the wavelength channel; the liquid crystal assembly is arranged between the MEM reflecting mirror arrays; and the reflecting mirror driving part is used for setting the angels of the reflecting surfaces of MEMS reflecting mirrors in the attenuation reflectance part and outputting the light of each wavelength channel to a set output port. The wavelength-selective optical switch adopts a liquid crystal unit array and the one-dimensional MEMS reflecting mirror arrays to realize the optical path switching and attenuating and the non-interference switching function.

Description

technical field [0001] The invention relates to the technical field of reconfigurable optical add-drop multiplexing, in particular to a wavelength selective switch capable of realizing optical path switching and attenuation, and having functions of interference-free switching and channel monitoring feedback. Background technique [0002] With the rapid development of wavelength division multiplexing (WDM) optical fiber communication systems and optical networks, the gradual recovery of the global optical communication market, and the transformation of telecom operators, some new converged services have begun to be applied, such as various A new type of IP service and wavelength-level services (such as storage area network) provided to large customers, these services all require Optical Add-drop Multiplexer ("OADM") technology, especially reconfigurable optical add-drop Multiplexing (Reconfigurable Optical Add-Drop Multiplexer, referred to as "ROADM") technology support. ROA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/35G02B26/08
Inventor 汪军平
Owner BROADEX TECH
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