FBG Sensor Interrogation Method Using Semiconductor Optical Amplifier in Ring Cavity Configuration
A sensor device that uses a number of bragg grating (FBG) sensors and novel interrogation system with a ring cavity configuration for simultaneous time-division-multiplexex (TDM) and wavelength-division-multiplexed (WDM) interrogation of FBG sensors. The ring cavity includes an amplifier, and output coupler and an optical circulator. The coupler is connected to a wavelength measuring system and the optical circulator is connected to the FBG sensors. The FBG sensors can be in a number of groups. TDM interrogation is applied to each group of FBG sensors while WDM interrogation is applied to each FBG sensors within each group.
Inventor: Tam, Hwa Yaw | Chung, Weng Hong
Priority Number: US7266260B2
IPC Current: G02B000600 | G01N002100 | G02B000634
US Class: 385012 | 3560731 | 385037
Assignee Applicant: The Hong Kong Polytechnic University
Title: FBG sensor interrogation method using semiconductor optical amplifier in ring cavity configuration
Usefulness: FBG sensor interrogation method using semiconductor optical amplifier in ring cavity configuration
Summary: Used in wavelength division multiplexing interrogation system.
Novelty: Sensor system used in wavelength division multiplexing interrogation system has ring cavity comprising of gain modulated device and optical coupler
電子
電路設計
TAM Hwa-yaw
CHUNG Weng-hong
美國
