Upload and download filter and an optical add-drop multiplexer

A technology of optical add-drop multiplexer and filter, which is applied in the field of communication, can solve the problem that the micro-ring resonance wavelength cannot be closed-loop controlled, the upload and download filters cannot realize closed-loop control, and the optical signal power cannot change with the change of the micro-ring resonance wavelength. Changes and other issues

Active Publication Date: 2019-05-24
HISILICON OPTOELECTRONICS CO LIMITED
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Taking the microring filter as an example, when the microring structure used for optical filtering has the same wavelength signal input at the input port and the upload port at the same time, the two input optical signals are just complementary at the output port, so that the lig...

Method used

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  • Upload and download filter and an optical add-drop multiplexer

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Embodiment Construction

[0031] Embodiments of the present application provide an uplink and downlink filter and an optical add / drop multiplexer, which can implement closed-loop control over the uplink and downlink filters.

[0032] Embodiments of the present application are described below in conjunction with the accompanying drawings.

[0033] The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, and this is merely a description of the manner in which objects with the same attribute are described in the embodiments of the present application. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, p...

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PUM

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Abstract

The embodiment of the invention discloses an upload and download filter and an optical add-drop multiplexer, which can realize closed-loop control of the upload and download filter. The embodiment ofthe invention provides an upload and download filter. The upload and download filter comprises an input port, an output port, an upload port and a download port, Wherein the uploading port is connected with the modulator, a first optical signal and a pilot signal are respectively input into the modulator, and the modulator is used for loading the pilot signal to the first optical signal to obtaina second optical signal and transmitting the second optical signal to the uploading port; A second optical signal is input into the uploading port, a third optical signal is input into the input port,and the wavelength difference between the second optical signal and the third optical signal is integral multiples of the free spectral range; And the output port and/or the downloading port are/is connected with a power detector, and the power detector is used for obtaining the output optical signal from the output port or the downloading port and detecting the optical power of the output optical signal.

Description

technical field [0001] The present application relates to the technical field of communication, in particular to an uplink and downlink filter and an optical add / drop multiplexer. Background technique [0002] The uplink and downlink filters are the key components in the optical fiber dense wavelength division multiplexing system, which can realize the add and drop of specific wavelengths or combinations of specific wavelengths in the main optical fiber link. The upload and download filters can use a fixed working wavelength, such as a filter based on a dielectric film, or a tunable working wavelength, such as a wavelength selective optical switch (WSS, Wavelength Selective Switch) based on a liquid crystal on silicon (LCOS, Liquid Crystal OnSilicon) )filter. [0003] Integrated optics can also be used to realize uplink and downlink filters with tunable operating wavelengths and a more compact structure. The uplink and downlink filters can be implemented with different opt...

Claims

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Application Information

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IPC IPC(8): H04J14/02
CPCH04J14/02H04B10/27H04B10/25H04B10/50H04J14/0201
Inventor 安德烈亚·梅洛尼弗朗切斯科·莫里凯蒂冀瑞强道格拉斯·阿吉亚尔马兹亚·米拉尼周素杰李彦波罗龙曾理
Owner HISILICON OPTOELECTRONICS CO LIMITED
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