Loading...
Application of low-power fiber optic demodulation technology based on VCSEL laser and wireless monitoring of coal mine roof
Date
2024
Abstract
The report describes a VCSEL (Vertical Cavity Surface Emitting Laser) based on voltage and current wavelength modulation, along with a fiber grating demodulation technique using acetylene absorption peaks as a wavelength reference. This enables the laser to achieve a wavelength scanning range of 10.5nm, with the entire system operating normally within a temperature range of 0-40℃, and the effective wavelength scanning range of the laser being 4.5nm. Since temperature control is not applied to the laser, its operating temperature varies with ambient temperature changes, resulting in a system characterized by a wide demodulation range, low power consumption, and compact size. Additionally, the study explores self-organizing network technology based on LoRa(Long Range) wireless communication for fiber optic wireless demodulation hosts, relays, and sub-stations. Leveraging the low power consumption characteristics of the demodulation technique, this enables wireless transmission of signals.
Supervisor
Description
Publisher
University of Limerick
Citation
20th Sensors and Their Applications Conference, 2024, Paper No: 62
Collections
Files
Loading...
Paper_62.pdf
Adobe PDF, 590.39 KB
Funding code
Funding Information
This work was supported in part by the National Key R&D Plan Project (2022YFB3207602) and Innovation Team Program of Jinan (2021GXRC037)