All-Optical Fiber Photoacoustic Gas Sensor With Double Resonant Enhancement Zhang, Congzhe ; Yang, Yuanhong ; Tan, Yanzhen ; Ho, Hoi Lut ; Jin, Wei Abstract Publication: IEEE Photonics Technology Letters Pub Date: October 2018 DOI: 10.1109/LPT.2018.2868450 Bibcode: 2018IPTL...30.1752Z