Applied Physics B

, Volume 106, Issue 2, pp 373–377

Channel-switchable single-/dual-wavelength single-longitudinal-mode laser and THz beat frequency generation up to 3.6 THz

Article

Abstract

We propose and demonstrate a simple approach to realize channel-switchable single-/dual-wavelength single-longitudinal-mode (SLM) lasers and switchable beat frequency generation in the THz frequency regime. It is a compact fiber-ring laser incorporating a Fabry–Pérot etalon, tunable filters, and a piece of unpumped polarization maintaining erbium-doped fiber (PM-EDF) as the saturable absorber. Two parallel-arranged tunable filters are configured inside the ring cavity to support switchable dual-wavelength SLM operation and consequent THz beat frequency generation. Switchable 19-channel 200-GHz ITU-grid-compatible single-wavelength SLM operation is implemented. Moreover, the channel-switchable dual-wavelength SLM laser and switchable THz beat frequency generation ranging from 0.2 to 3.6 THz with a tuning step of 0.2 THz are demonstrated in the experiment.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Q. Sun
    • 1
    • 2
    • 3
    • 4
  • J. Wang
    • 3
  • W. Tong
    • 1
    • 2
  • J. Luo
    • 1
    • 2
  • D. Liu
    • 3
    • 4
  1. 1.State Key Laboratory of Optical Fiber and Cable Manufacture TechnologyWuhanChina
  2. 2.Yangtze Optical Fiber and Cable Company Ltd.WuhanChina
  3. 3.College of Optoelectronic Science and EngineeringHuazhong University of Science and TechnologyWuhanChina
  4. 4.National Engineering Laboratory for Next Generation Internet Access SystemWuhanChina

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