Laser Physics

, Volume 20, Issue 10, pp 1907–1912

A novel-configuration multi-wavelength Brillouin erbium fiber laser and its application in switchable high-frequency microwave generation

Fiber Optics

DOI: 10.1134/S1054660X10190047

Cite this article as:
Fu, J., Chen, D., Sun, B. et al. Laser Phys. (2010) 20: 1907. doi:10.1134/S1054660X10190047

Abstract

A novel configuration of compound-cavity multi-wavelength Brillouin erbium fiber laser is proposed and experimentally demonstrated. With an incident optical carrier power of 8 dBm, at least 14 lasing lines are obtained with a wavelength spacing of ∼0.08 nm. Stability and power uniformity of the multi-wave-length lasing are ensured by the flat hybrid gain of Brillouin and erbium, the compound-cavity structure, and the four-wave mixing suppression using a long (10 km) single-mode fiber. A stable and frequency-switchable microwave can be achieved by incorporating a fiber Bragg grating filter to select the desired nth-order Stokes wave and beating it with the optical carrier at a photodetector. In our experiment, the 1st-4th-order Stokes waves are filtered respectively and hence a high-quality microwave with a switchable frequency from ∼10 to ∼40 GHz and a tuning step of ∼10 GHz is achieved. The signal-to-noise ratio is measured to be >25 dB.

Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  1. 1.Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical InstrumentationZhejiang UniversityHangzhouChina
  2. 2.Joint Research Laboratory of Optics of Zhejiang Normal University and Zhejiang UniversityZhejiang UniversityHangzhouChina
  3. 3.Institute of Information OpticsZhejiang Normal UniversityJinhuaChina