Details

Autor(en) / Beteiligte

• Liu, Jingxuan
• Wang, Muguang
• Tang, Yu
• Yang, Yuguang
• Wu, Yue
• Jin, Wenxing
• Jian, Shuisheng

Titel

Switchable Optoelectronic Oscillator Using an FM-PS-FBG for Strain and Temperature Sensing

Ist Teil von

• IEEE photonics technology letters, 2017-12, Vol.29 (23), p.2008-2011

Ort / Verlag

IEEE

Erscheinungsjahr

2017

Quelle

IEEE Electronic Library Online

Beschreibungen/Notizen

• By incorporating a phase-shifted fiber Bragg grating (PS-FBG) inscribed in few-mode fiber (FMF) named FM-PS-FBG for the first time, a novel frequency-switchable optoelectronic oscillator (OEO) to perform simultaneous strain and temperature measurement is proposed and experimentally demonstrated. In the OEO loop, two switchable oscillation frequencies are determined by the reflected bands of FM-PS-FBG based on different mode couplings and corresponding notches. Due to the characteristics of modes, two OEO-generated microwave signals exhibit different strain and temperature sensitivities. Therefore, through monitoring the frequency shifts of microwave signals, the simultaneous strain and temperature sensing can be realized by the proposed OEO sensor with high-speed and high-resolution interrogation.