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A method and application of widening the wavelength division channel of the wavelength division multiplexer

A wavelength division multiplexer and channel technology, which is applied in the direction of instruments, light guides, optics, etc., can solve the problem that it is difficult to achieve wide bandwidth output of wavelength division channels

Active Publication Date: 2021-09-10
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technology is difficult to achieve wide bandwidth output of WDM channel

Method used

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  • A method and application of widening the wavelength division channel of the wavelength division multiplexer
  • A method and application of widening the wavelength division channel of the wavelength division multiplexer
  • A method and application of widening the wavelength division channel of the wavelength division multiplexer

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Embodiment

[0027] According to system requirements, a fixed wavelength laser with a center wavelength of 1542.9nm and a bandwidth of ±0.2nm is used, and a wavelength-tunable coordinated laser with a center wavelength of 1550.9nm and a bandwidth of ±2nm. The channel bandwidth of the narrow bandwidth wavelength division multiplexer that can be used is ±0.5nm. 1x4 wavelength division multiplexer is used according to requirements: the passband of the multiplexing channel is 1542.9nm±0.2nm (fixed wavelength), 1550.9nm±2nm (tunable wavelength), and the center wavelength of the wavelength division channel is 1542.9nm, 1550.1nm, 1550.9 nm, 1551.7nm, the bandwidth is ±0.5nm. 3x1 wavelength division multiplexer is used: the passband of the multiplexing channel is 1550.9nm±2nm (tunable wavelength); the center wavelength of the wavelength division channel is 1550.1nm, 1550.9nm, 1551.7nm, and the bandwidth is ±0.5nm. Weld the wavelength division channels of the 1x4 wavelength division multiplexer an...

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Abstract

The invention provides a method for expanding the wavelength division channel of the wavelength division multiplexer, including: determining the central wavelength and bandwidth of the required wide bandwidth wavelength division channel and the central wavelength of the narrow bandwidth wavelength division channel; determining the available Pass bandwidth of ordinary wavelength division multiplexers; select or process N+1 wavelength division multiplexers, so that the center wavelength and bandwidth of each channel meet the conditions: select or process N wavelength division multiplexers or beam combiners, so that The central wavelength and bandwidth of each channel correspond to the first N channels of the device used; each channel corresponding to the central wavelength of the two devices is welded.

Description

technical field [0001] The invention designs an optical fiber communication technology, in particular a method and application for widening the wavelength division channel of a wavelength division multiplexer. Background technique [0002] As an important medium for optical information transmission, optical fiber has been extensively studied in the fields of optical fiber communication and optical fiber sensing. Optical fiber communication uses light waves of very high frequency (1014Hz) as the carrier and optical fiber as the transmission medium. The advent of optical fiber communication makes high-speed, large-capacity communication possible. At present, it has become the most important information transmission technology. It has the advantages of extremely wide frequency band, large communication capacity, low loss, long relay distance, and strong anti-electromagnetic interference ability. [0003] Wavelength division multiplexing technology has been widely used in optic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/293
CPCG02B6/2938G02B6/29395
Inventor 朱日宏任大良单崇铭王朕
Owner NANJING UNIV OF SCI & TECH