Share Email Print
cover

Proceedings Paper

Wavelength-swept fiber laser based on acousto-optic tuning method
Author(s): Ming-hui Chen; Yun-ping Fan; Hao Zhang; Jian-feng Tao; Gang Zheng
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

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.

Paper Details

Date Published: 31 October 2016
PDF: 9 pages
Proc. SPIE 10024, Optics in Health Care and Biomedical Optics VII, 100241Y (31 October 2016); doi: 10.1117/12.2245280
Show Author Affiliations
Ming-hui Chen, Univ. of Shanghai for Science and Technology (China)
Yun-ping Fan, Univ. of Shanghai for Science and Technology (China)
Hao Zhang, Univ. of Shanghai for Science and Technology (China)
Jian-feng Tao, Univ. of Shanghai for Science and Technology (China)
Gang Zheng, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 10024:
Optics in Health Care and Biomedical Optics VII
Qingming Luo; Xingde Li; Ying Gu; Yuguo Tang, Editor(s)

© SPIE. Terms of Use
Back to Top