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Tunable wave length selection/locking light dense wave division complex combining wave/channel splitting filter

A dense wavelength division multiplexing and wavelength selection technology, applied in the field of optical communication, to achieve the effects of good stability, fast wavelength tuning, and fast voltage tuning performance

Inactive Publication Date: 2005-03-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned various types of 1×N dense wavelength division multiplexing multiplexing / demultiplexing devices have a limitation. The wavelength of each channel at the output port is generally a fixed wavelength, and some devices, such as the integrated waveguide AWG, also have need temperature control etc.

Method used

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  • Tunable wave length selection/locking light dense wave division complex combining wave/channel splitting filter
  • Tunable wave length selection/locking light dense wave division complex combining wave/channel splitting filter
  • Tunable wave length selection/locking light dense wave division complex combining wave/channel splitting filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: 1×8 tunable wavelength selection / locking optical dense wavelength division multiplexing multiplexer / demultiplexer

[0038] The design parameters are as follows: the actual test index of the wavelength tuning and selection combination elements 5 and 6 is: high reflectance film reflectivity 98.3%, bandwidth 30 nanometers, center wavelength 1558 nanometers, electro-optic polymer film thickness 5 microns, electro-optic coefficient 38pm / V, ITO has a film thickness of 20 nm and an impedance of 300 ohms / square inch. The cavity interval is 50 microns, and the test results are as follows:

[0039] insertion loss

Embodiment 2

[0040] Example 2: 64×64 fast tunable wavelength selective optical switch matrix

[0041] The design parameters are the same as above: the actual test indicators of the wavelength tuning selection combination elements 5 and 6 are: the reflectivity of the high-reflection film is 98.3%, the bandwidth is 30 nanometers, the central wavelength is 1558 nanometers, the film thickness of the electro-optic polymer is 5 microns, the electro-optic coefficient is 38pm / V, the cavity The interval is 50 microns, the film thickness of ITO is 20 nm, and the impedance is 300 ohms / square inch. The test results are as follows:

[0042] Response time: less than 50 nanoseconds; synchronous response: less than 20 nanoseconds; channel interval: 100GHz; number of wavelength channels: 8; number of input fiber channels: 8; number of output fiber channels: 8; equivalent matrix size: 64×64; Minimum insertion loss: 11.2dB; maximum insertion loss: 13.3dB.

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Abstract

The invention is a tunable wavelength selecting / locking optical dense wave division multiplex wave combining / separating device, including an input port and eight wave separation output ports, two wavelength tuning selection combining components, and the wavelength locking control structure includes optical-fiber coupler, optical FP etalon, fast wavelength tuning filter, two fast photoelectric conversion probes, and differential amplifier tracking signal processor. The wavelength locking control structure collects and processes two optical signals of a primary optical path and controls the wavelength tuning selection combining components in the primary optical path by circuit feedback. The wavelength tuning selection combining components are packaged with many optical resonance cavities in parallel on an optical shared surface, adopt the electrooptical effect of electrooptical polymer film and the multi-reflection coherence theory of optical resonance cavities to form tuned filtering characteristic, making the output of each wave separation port of the multiplexer meet the design requirements on wavelength selection and wideband tuning, and it makes locking control on the central wavelength of each channel, stable and reliable.

Description

technical field [0001] The invention relates to a 1*N tunable wavelength selection / locking optical dense wavelength division multiplexer / demultiplexer, and the fast optical switching matrix formed by it can be applied to optical burst switching and optical packet switching. It belongs to the technical field of optical communication. Background technique [0002] The next-generation optical network oriented to Internet services begins to develop from IP over SONET / SDH (Internet Protocol Access Optical Synchronous Digital Network) to IP over WDM (Internet Protocol Access Wavelength Division Multiplexing System) network. IP over WDM, also known as optical Internet, means that IP is directly connected to the WDM network or directly connected to the optical fiber. IP network puts forward higher and higher requirements for optical transmission and optical switching bandwidth. [0003] In the past few years, the core equipment for building an all-optical network is optical downst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/10G02B6/24G02B6/293
Inventor 李新碗陈建平叶爱伦
Owner SHANGHAI JIAO TONG UNIV
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