1. Low noise GHz passive harmonic mode-locking of soliton fiber laser using evanescent wave interaction with carbon nanotubes
- Author
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Sang Hwa Yoo, Chang Su Jun, Sun Young Choi, Ju Hee Im, Dong-Il Yeom, Byoung Yoon Kim, and Fabian Rotermund
- Subjects
Materials science ,Nanotubes, Carbon ,business.industry ,Relative intensity noise ,Spectrum Analysis ,Saturable absorption ,Soliton (optics) ,Equipment Design ,Lasers, Solid-State ,Laser ,Atomic and Molecular Physics, and Optics ,Absorption ,law.invention ,Optics ,Mode-locking ,law ,Fiber laser ,Harmonic ,Fiber Optic Technology ,Nanotechnology ,business ,Noise (radio) - Abstract
Passive harmonic mode-locking in soliton fiber laser is presented with excellent noise characteristics by employing a single-walled carbon nanotubes saturable absorber designed to interact with evanescent wave of the laser field. The 34(th) harmonic mode-locking pulses at 943.16 MHz repetition rate were stably generated with 18 mW output power,50 dB side-mode suppression and -140 dB/Hz relative intensity noise. Soliton energy control with polarization controller further increased the harmonic order to 61st, 1.692 GHz, but with compromised performance. Scaling to higher-order harmonic mode-locking is discussed for practical application in optical communication system.
- Published
- 2011