Abstract

An ultra-widely tunable acousto-optic add-drop filter is proposed and demonstrated based on the acoustically-induced polarization conversion of cladding-etched single-mode fiber, which covers wavelengths from 1081 nm to 1582 nm with a tuning band larger than 500 nm. The constructed filter has reconfigurable band-pass and band-rejection filtering characteristics, and obtains the advantages of ultra-wide wavelength tuning range, fast tuning speed, simple fabrication and zero frequency shift. It has potential applications in the fields of WDM communication, ultra-wide tunable laser, signal processing, swept-source optical coherence tomography (SS-OCT) and wideband spectroscopy.

Tunable add/drop channel coupler based on an acousto-optic tunable filter and a tapered fiber

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Acousto-optic reconfigurable filter based on vector mode fusion in dispersion-compensating fiber

Ligang Huang, Shunli Liu, Chaoze Zhang, Yanxiang Zhao, Laiyang Dang, Lei Gao, Wei Huang, Guolu Yin, and Tao Zhu
Opt. Express 31(13) 21253-21263 (2023)

Acousto-optic tunable ultrafast laser with vector-mode-coupling-induced polarization conversion

Yujia Li, Ligang Huang, Haonan Han, Lei Gao, Yulong Cao, Yuan Gong, Wending Zhang, Feng Gao, Iroegbu Paul Ikechukwu, and Tao Zhu
Photon. Res. 7(7) 798-805 (2019)

Add-drop filters based on mode-conversion cavities

Jacob B. Khurgin, Marcel W. Pruessner, Todd H. Stievater, and William S. Rabinovich
Opt. Lett. 32(10) 1253-1255 (2007)

Acousto-optic tunable bandpass filter based on acoustic-flexural-wave-induced fiber birefringence

Ligang Huang, Wending Zhang, Yujia Li, Haonan Han, Xiaoting Li, Pengfa Chang, Feng Gao, Guoquan Zhang, Lei Gao, and Tao Zhu
Opt. Lett. 43(21) 5431-5434 (2018)