An FBG wavelength demodulator based on a DFB laser

By designing a plug-in heat dissipation structure and a flip-up adjustment plate in the FBG wavelength demodulator, the problem of dust ingress is solved, achieving greater usability and placement stability.

CN224455818UActive Publication Date: 2026-07-03JIANGSU LANGPUDA PHOTOELECTRIC TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU LANGPUDA PHOTOELECTRIC TECH CO LTD
Filing Date
2025-09-19
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

When not in use, dust can easily get into the heat dissipation area of ​​the FBG wavelength demodulator based on DFB laser, affecting the normal operation of internal components.

Method used

An FBG wavelength demodulator with a plug-in heat dissipation structure and a flip-adjustment plate was designed. The gas expansion lifts the telescopic connector and flips the adjustment plate to seal the heat dissipation port and prevent dust from entering. At the same time, by turning the adjustment knob, the gas inside the bottom supporting rubber chassis is extracted to reduce the air pressure and improve the placement stability.

Benefits of technology

It effectively prevents dust from entering, improves the usability and placement stability of the FBG wavelength demodulator, and ensures that internal components are not interfered with.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an FBG wavelength demodulator based on a DFB laser, including an FBG wavelength demodulator device body and a front-mounted data display screen located on its front side; a heat dissipation structure with ventilation slots is provided in the plug-in connection heat dissipation structure; a flip adjustment plate is rotatably connected to the plug-in connection heat dissipation structure near its end via a rotating shaft; a flip connecting block is provided near the side of the flip adjustment plate; a telescopic connecting column is rotatably connected to the side of the flip connecting block; and an internal telescopic connecting body is provided on the side of the telescopic connecting column. Movement of the telescopic connecting column causes the flip adjustment plate to flip at a certain angle, and the angle increases with the degree of air pressure caused by temperature expansion of the internal telescopic connecting body. When the temperature is low, the flip adjustment plate will reset and close due to gravity, preventing dust from entering and effectively improving the practicality of the FBG wavelength demodulator based on a DFB laser.
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