Title :
250-GHz Passive Harmonic Mode-Locked Er-Doped Fiber Laser by Dissipative Four-Wave Mixing With Silicon-Based Micro-Ring
Author :
Siao-Shan Jyu ; Ling-Gang Yang ; Chi-Yan Wong ; Chien-Hung Yeh ; Chi-Wai Chow ; Hon-Ki Tsang ; Yinchieh Lai
Author_Institution :
Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
We propose and demonstrate a 250-GHz high-repetition-rate mode-locked Er-doped fiber laser, which utilizes a silicon micro-ring resonator (SMRR). The SMRR acts as an optical comb filter to help achieve passive mode-locking through the dissipative four-wave-mixing effect induced by a piece of high nonlinear fiber. A short section of polarization-maintaining fiber is inserted in the cavity to induce birefringence filtering to significantly enhance the stability of the proposed laser through the combined effects of optical filtering and nonlinear spectral broadening. The laser can operate about 2 and 6 nm in the case of 1.48-ps and 875-fs output pulsewidth, with 3-dB bandwidth, respectively. The laser can remain mode locked, during our measurement time, without any cavity length or temperature feedback control.
Keywords :
birefringence; comb filters; elemental semiconductors; erbium; fibre lasers; laser cavity resonators; laser mode locking; micromechanical resonators; multiwave mixing; silicon; Si; birefringence filtering; dissipative four-wave mixing; frequency 250 GHz; high nonlinear fiber; high-repetition-rate mode-locked fiber laser; nonlinear spectral broadening; optical comb filter; passive harmonic mode-locked Er-doped fiber laser; polarization-maintaining fiber; silicon microring resonator; time 1.48 ps; time 875 fs; wavelength 2 nm to 6 nm; Laser mode locking; Optical device fabrication; Optical fibers; Optical filters; Optical pulses; Optical resonators; Fiber lasers; four-wave mixing (FWM); optical communications;
Journal_Title :
Photonics Journal, IEEE
DOI :
10.1109/JPHOT.2013.2283243
