A multi-channel laser wavelength correlation monitor and monitoring method

A laser wavelength and correlation technology, applied in the field of monitors, can solve problems such as the practical application limitations of dense wavelength division multiplexing optical fiber communication systems, improve long-term working accuracy and test reliability, improve signal-to-noise ratio, and reduce channel interference effect

Active Publication Date: 2019-10-29
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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Problems solved by technology

This makes the practical application of dense wavelength division multiplexing optical fiber communication system significantly limited

Method used

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  • A multi-channel laser wavelength correlation monitor and monitoring method
  • A multi-channel laser wavelength correlation monitor and monitoring method
  • A multi-channel laser wavelength correlation monitor and monitoring method

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Experimental program
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0029] The multi-channel laser wavelength correlation monitor of the present invention adopts a multi-fiber collimator, an F-P etalon with adjustable cavity length and a photoelectric detector to form a wavelength monitoring device, and monitors and measures the frequency difference of each laser light source by scanning. Through the multiplexing of the F-P etalon by the multi-fiber head and the tunability of the etalon, the frequency difference monitoring and feedback of the multi-laser is realized, the structure is simple, and the multi-channel laser can be monitored at the same time, and the DFB laser does not need to be modulated, reducing It eliminates channel interference and plays a significant role in improving the system signal-to-noise ratio.

[0030] Specifically, such as figure 1 and 2 The first shown embodiment, taking the dual-c...

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Abstract

The invention relates to the field of laser wavelength monitoring, and discloses a multichannel laser wavelength dependence monitor and a monitoring method. The multichannel laser wavelength dependence monitor is composed of a multi-optical-fiber collimator, an F-P etalon with adjustable cavity length and a photoelectric detector, and monitors and measures frequency differences between laser light sources in a scanning manner. Through the multiplexing of the F-P etalon by means of a multi-optical-fiber head and the tenability of the etalon, the multichannel laser wavelength dependence monitor realizes frequency difference monitoring and feedback of multiple laser devices, is simple in structure, can be used for monitoring multi-channel laser without modulating a DFB laser device, reduces channel interference, and plays a significant role in improving a signal-to-noise ratio of the system.

Description

technical field [0001] The invention relates to a monitor, in particular to a multi-channel laser wavelength correlation monitor. Background technique [0002] With the gradual deepening of information and digital society, the amount of data that needs to be exchanged and transmitted continues to increase sharply. Dense Wavelength Division Multiplexing (DWDM) is becoming more and more important in optical fiber communication systems. The technology of simultaneously transmitting several or even dozens of different light waves in the optical fiber and doubling the capacity of the communication system meets the needs of the current society for large-capacity information and data transmission and exchange. As the number of light waves carried by a single optical fiber increases, the interval between corresponding signal carriers gradually decreases. Usually, the light source in the optical fiber communication system adopts the distributed feedback semiconductor laser (referred...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/07
CPCH04B10/07
Inventor 李阳赵武丽林江铭胡豪成吴砺凌吉武
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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