31 October 2016 Wavelength-swept fiber laser based on acousto-optic tuning method
Author Affiliations +
In this study, we have demonstrated a wavelength-swept fiber laser based on an acousto-optic tunable filter(AOTF) as a selective element and a semiconductor optical amplifier(SOA) as a gain medium in an internal fiber ring cavity. The light deriving from one port of the SOA goes through an optical isolator, the AOTF, a fiber coupler and a polarized controller successively, then it goes back to the other port of the SOA to form a ring cavity. The laser output is from another port of the fiber coupler. The laser made by this method is mainly used for swept-source optical coherence tomography(SS-OCT). The application of the SOA provides a sufficiently broad range and can ensure an increased axial resolution of SS-OCT. AOTF offers a wide tuning range, high switching speed and stable operation against vibration for the non-mechanical structure. The proposed wavelength-swept fiber laser ensures a high axial resolution of tomographic images and has a stable laser output. We have discussed the influence of the SOA injection current to the tuning range of the laser. In the SOA injection current of 280 mA, a continuous wavelength tuning range from 1295 to 1370 nm centered at a wavelength of 1330nm is obtained at the sweep rate of 1.06 kHz, and the power of the swept source was 1.14 mW. In addition, for quantitative characterization of the wavelength-swept performance with a AOTF, we have theoretically and experimentally analyzed the influence of the following controllable parameters: injection current, output power and sweeping frequency.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ming-hui Chen, Yun-ping Fan, Hao Zhang, Jian-feng Tao, Gang Zheng, "Wavelength-swept fiber laser based on acousto-optic tuning method", Proc. SPIE 10024, Optics in Health Care and Biomedical Optics VII, 100241Y (31 October 2016); doi: 10.1117/12.2245280; https://doi.org/10.1117/12.2245280


Swept laser source based on acousto-optic tunable filter
Proceedings of SPIE (December 03 2014)
Dual wavelength SOA based fiber ring laser
Proceedings of SPIE (February 22 2017)
Frequency comb swept lasers for optical coherence tomography
Proceedings of SPIE (February 19 2010)
Integrated fiber circuits
Proceedings of SPIE (June 06 1995)

Back to Top