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Flexible grid dual etalon wavelength locker

A flexible grid and wavelength locking technology, which is applied in the field of optical communication devices, can solve problems such as the inability to detect laser frequency offset, and achieve the effects of simple structure, high temperature stability, and high wavelength locking accuracy

Pending Publication Date: 2020-06-09
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the laser frequency offset is large, especially when the offset is near the peak and valley of the etalon response curve, the single etalon type wave lock cannot detect the laser frequency offset with high precision

Method used

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  • Flexible grid dual etalon wavelength locker
  • Flexible grid dual etalon wavelength locker
  • Flexible grid dual etalon wavelength locker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like Figures 1 to 3 As shown in one, the present embodiment includes photodetector PD1 3, photodetector PD2 5, photodetector PD3 6 and single fiber collimator 1, beam splitter combination 2 and double air gap F-P etalon combination arranged in sequence 4; the photodetector PD1 3 is arranged on the side of the beam splitter combination 2 close to the single fiber collimator 1, and the photodetector PD2 5 and photodetector PD3 6 are opposite up and down and arranged in the double air gap F-P The etalon assembly 4 is away from the side of the beam splitter assembly 2, and the two ends of the beam splitter assembly 2 respectively have a first beam splitting surface 201 and a second beam splitting surface 202, see image 3 , the double-air-gap F-P etalon combination 4 is formed by a pair of air-gap F-P etalons fixed together, which are respectively etalon one 401 and etalon two 402, preferably, the double-air-gap F-P standard The tool combination is a conjoined single-hole...

Embodiment 2

[0038] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the double-air-gap F-P etalon combination 4 of this embodiment uses a double-hole double-air-gap F-P etalon combination to replace the conjoined single-hole double-air-gap F-P standard of Embodiment 1 Tool combination; Wherein, photodetector PD1 3, photodetector PD2 5, photodetector PD3 6, single fiber collimator 1, spectroscope combination 2 and double air gap F-P etalon combination 4 are all identical with embodiment 1, In addition, the implementation process in this embodiment is also the same as that in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a flexible grid double etalon wavelength locker, which comprises a photoelectric detector PD1, a photoelectric detector PD2, a photoelectric detector PD3, a single-fiber collimator, a spectroscope combination and a double-air-gap F-P etalon combination, wherein the single-fiber collimator, the spectroscope combination and the double-air-gap F-P etalon combination are arranged in sequence. The double-air-gap F-P etalon combination cooperates with the photoelectric detector PD2 and the photoelectric detector PD3 to feed back two etalon signals, the reference signals whichare received by the photoelectric detector PD1 and fed back by the spectroscope combination are compared, and full-communication wavelength locking is realized and high locking precision is possessed. Furthermore, two etalons with small FSR difference and certain peak frequency offset are adopted to form the double-air-gap F-P etalon combination, laser wavelength locking of a flexible grid with coverage of a full communication wave band is further realized, and the advantages of high temperature stability, high wavelength locking precision, low energy consumption, simple structure and easiness in realization are achieved.

Description

technical field [0001] The invention belongs to the field of optical communication devices, in particular to a flexible grid double etalon wavelength locker. Background technique [0002] The wavelength locker is a basic optical component. In the dense wavelength division multiplexing (DWDM) system, the laser wavelength of each channel needs to be monitored and precisely locked. At the same time, the protection channel (such as N: 1) of the DWDM system is usually used The most important is the tunable laser, which requires a wavelength locker to tune and lock the wavelength of the laser to the wavelength of the channel where the faulty laser is located, so as to quickly and accurately realize the protection of the communication system. [0003] At present, the main wavelength lockers include filter type wave lock, diffraction grating type wave lock, F-P (Fabry-Perot) etalon type wave lock, etc. Among them, the filter type wave lock and the diffraction grating type wave lock...

Claims

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Application Information

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IPC IPC(8): H01S3/13G02B27/10
CPCH01S3/1305G02B27/1006
Inventor 李阳郑保忠庄世坚
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD