Wavelength selection method and device

A wavelength selection and wavelength technology, applied in the field of optical communication, can solve the problems of unable to support fast switching of WSS devices, WSS applications do not achieve optimal performance, etc.

Pending Publication Date: 2022-03-08
HUAWEI TECH CO LTD
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Problems solved by technology

This fixed refresh frequency driving method does not achieve optimal performance for WSS applications
Especially in large-port WSS, the scale of LCoS resolution will further increase, and the current driving method of LCoS will not be able to support the demand for faster switching of WSS devices

Method used

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  • Wavelength selection method and device
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  • Wavelength selection method and device

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Embodiment Construction

[0104] The technical solution in this application will be described below with reference to the accompanying drawings.

[0105]The technical solution of this application can be applied to optical communication, optical switching, digital center network, microwave photonics, liquid crystal antenna, optical phased array, beam forming, beam scanning, laser radar, laser projection, laser TV, holographic display, adaptive Optics, laser beam shaping, laser processing, ultrafast laser pulse shaping, laser active imaging, optical tomography, and retinal imaging. Exemplarily, this technical solution can be used in optical switching devices (or optical switching structures) in these neighborhoods, for example, a reconfigurable optical add-drop multiplexer (reconfigurable optical add-drop multiplexer, ROADM) and an optical cross-connect ( Optical cross-connect, OXC) equipment core device, that is, in the WSS device.

[0106] see figure 1 , figure 1 It is an N×N WSS device. Such as f...

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Abstract

The invention provides a wavelength selection method and a communication device. The method is applied to the fields of optical communication, optical switching, digital center networks, microwave photonics, liquid crystal antennas, optical phased arrays, beam forming, beam scanning, laser radars, laser projection, laser televisions, holographic display, adaptive optics, laser beam shaping, laser processing, ultrafast laser pulse shaping, laser active imaging, optical tomography, retina imaging and the like. And under the condition that the port of the WSS device is switched, only the image data of the changed local image in the LCOS image is updated by taking the time interval smaller than the duration of one frame of image as a unit, and the driving voltage of the pixels on the LCOS display screen is refreshed according to the priority. Compared with refreshing the image data of the whole LCOS image according to the frame frequency and refreshing the driving voltage of the pixels according to the fixed sequence of the pixel numbers, the port switching of the WSS device can be accelerated.

Description

technical field [0001] The present application relates to the technical field of optical communication, and more specifically, to a wavelength selection method and device. Background technique [0002] Optical networks are continuously evolving towards high capacity, low latency, and intelligence. Optical switching technologies such as reconfigurable optical add-drop multiplexer (ROADM) and optical cross-connect (OXC) not only support the current commercial optical network, but also realize the next-generation optical network one of the key technologies. The wavelength selective switch (wavelength selective switch, WSS) is the core device of OXC, and its fast switching capability is of great value for complex networks to achieve stronger scheduling and protection capabilities. The current requirement for the rerouting time of an Automatically Switched Optical Network (ASON) is to achieve a protection link switching time of 50 ms. [0003] In WSS, phase-type liquid crystal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/35G02F1/13G09G3/36
CPCG02B6/356G02F1/13G09G3/36H04Q2011/0039G09G3/3611H04Q11/0005G09G2310/04G09G2340/0435
Inventor 李腾浩向晖
Owner HUAWEI TECH CO LTD
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