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Reconfigurable two-dimensional optical encoder and encoding method based on photoswitch and light reflector

A technology of optical reflector and optical encoder, which is applied in the field of information network and optical fiber communication, can solve the problems of complex structure and control circuit, high cost of network expansion and upgrade, etc., and achieve the reduction of the number of wavelengths, simple structure and network scalability Good results

Inactive Publication Date: 2015-04-01
SOUTHEAST UNIV
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Problems solved by technology

However, the number of components used is large, the structure and control circuit are complicated, and when the number of users increases, the cost of network expansion and upgrade is very high

Method used

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  • Reconfigurable two-dimensional optical encoder and encoding method based on photoswitch and light reflector
  • Reconfigurable two-dimensional optical encoder and encoding method based on photoswitch and light reflector
  • Reconfigurable two-dimensional optical encoder and encoding method based on photoswitch and light reflector

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Embodiment Construction

[0022] Below in conjunction with embodiment and accompanying drawing, technical solution of the present invention is described in detail:

[0023] The reconfigurable two-dimensional optical encoder based on optical switch and optical reflector of the present invention, such as figure 1 and figure 2As shown, it includes a broadband light source sequentially connected along the optical path, a three-port optical circulator, a 1×M arrayed waveguide grating, an M×N optical switch, N-1 optical reflectors with different delays, and all The wavelength selection and routing controller connected to the circuit control port of the M×N optical switch, wherein M is the total number of available wavelengths, and N-1 is the total number of different time delays that can be realized; the first of the broadband light source and the optical circulator The ports are connected, the third port of the optical circulator is the two-dimensional optical coded signal output port, the second port of ...

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Abstract

The invention discloses a reconfigurable two-dimensional optical encoder based on a photo-switch and a light reflector and an encoding method. The encoder comprises a broadband light source, a wavelength selecting and routing controller, a three-port optical circulator, (a) 1*M arrayed-waveguide optical grid (s), M*N photo switches and (N-1) optical fiber Sagnac ring mirrors with different delay quantities, wherein N-1 optical fiber Sagnac ring mirrors can also be replaced with (N-1) optical fiber lines and (N-1) light reflection mirrors with different delay quantities for realizing the same function. The encoder is capable of quickly and effectively realizing the encoding function of the detection pulse; the codon capacity can be increased by fully using the wavelength and the two-dimensional information of time; the network is better in expandability; the number of the user wavelengths is relatively reduced; the pectrum resource is saved; the encoder can be used for meeting the requirements of simple structure, low cost and easy to realize.

Description

technical field [0001] The invention belongs to the field of information network technology and optical fiber communication technology, and specifically relates to a reconfigurable two-dimensional optical encoder and an encoding method based on an optical switch and an optical reflector, which are applied to optical fiber link fault detection in a passive optical network. Background technique [0002] The passive structure used in the passive optical network PON has the advantages of high reliability, convenient maintenance, and technically easy expansion and upgrade. Due to the rapid growth of end users' demand for broadband and its obvious comprehensive technical advantages, PON has shown a dynamic development trend. With the continuous development of passive optical network PON technology, the data transmission rate is getting higher and higher, and the number of users carried by the network is increasing. Any link failure in the network will cause a large amount of data ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/071H04J14/00
Inventor 朱敏张教张旋王东鹏孙小菡
Owner SOUTHEAST UNIV
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