Optical add-drop multiplexer with adjustable wave length channel

A technology of optical add-drop multiplexer and wavelength channel, which is applied in the direction of wavelength division multiplexing system, optical waveguide coupling, etc., can solve the problem of non-adjustable wavelength channel, etc., and achieve the effect of compact structure and simple structure

Inactive Publication Date: 2006-04-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing planar waveguide type (MZI type) non-reconfigurable OADM can only route a single wavelength channel, and the add and drop wavelength channels are not adjustable

Method used

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  • Optical add-drop multiplexer with adjustable wave length channel
  • Optical add-drop multiplexer with adjustable wave length channel
  • Optical add-drop multiplexer with adjustable wave length channel

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Embodiment

[0021] The structural diagram of the present invention is shown in Figures 1 and 2: the OADM has a symmetrical structure, including four ports of signal input terminal 1, drop terminal 2, output terminal 3 and add terminal 4, single-mode waveguide filter and MZI filter Bragg gratings on the two arms of the filter, wherein the single-mode waveguide filter includes two directional couplers composed of waveguides 15, 16 and 17 and two parallel arms 18, and the tops of the two parallel arms 18 are engraved with completely symmetrical Grooved Bragg grating11. The longitudinal side view of the grating is shown in Fig. 2(b). The period, etching depth and duty cycle of the grating are , s and (-a) / , respectively.

[0022] A connecting waveguide 14 is provided at the end of the above-mentioned waveguide 15 .

[0023] The above-mentioned waveguides 15 and 17 are S-shaped curved waveguides, and the waveguide 16 is a straight waveguide.

[0024] The above-mentioned waveguides 14, 15,...

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Abstract

The invention relates to OADM with up and down wavelength channel adjustable based on plane waveguide, which comprises: a monomode waveguide MZI filter with four ports as a signal input port (1), a down port (2), an output port (3), and an up port (4); and Bragg optical gratings etched on two arms of the filter; wherein, the filter comprises two directional coupler composed of waveguides (15) ~ (17) and two parallel arms (18) with Bragg gratings (11) on top. This invention realizes up and down wavelength adjustable, uses micro-manufacture technology to integrate IC, and has wide application.

Description

1. Technical field: [0001] The invention relates to an optical add / drop multiplexer (OADM) based on a planar waveguide and with adjustable upper and lower wavelength channels. It belongs to the innovative technology in the planar optical waveguide add-drop multiplexing device. 2. Background technology: [0002] Optical Add-Drop Multiplexer (OADM) is one of the core devices of WDM all-optical communication network. Its function is to selectively receive and send some wavelength channels up and down from the transmission optical path locally, while not affecting the transmission of other wavelength channels. After the optical fiber communication network is introduced into OADM, the up / down routing of the wavelength channel can be realized conveniently and flexibly; the network can be dynamically reconfigured and self-healing; It has wavelength compatibility and business transparency; the introduction of OADM into the network can also more advantageously realize the detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02G02B6/34
Inventor 李宝军邢晓波
Owner SUN YAT SEN UNIV
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