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A stable multiwavelength SOA ring laser with equalized power spectrum

D. LIU1,* , Y. LIU2, H. WANG1

Affiliation

  1. School of Physics & Electronic Technology, Hubei University, Wuhan 430062, China
  2. Hubei Key Lab, Hubei University of Technology, Wuhan 430068, China

Abstract

We experimentally demonstrate a new structure of a multiwavelength semiconductor optical amplifier (SOA) ring laser based on a fiber Sagnac loop filter that can generate up to 25 stable output lasing wavelengths at room temperature. By varying the length of a polarization-maintaining (PM) fiber within the Sagnac loop filter, the wavelength spacing between the output lasing wavelengths can be changed to a desired value. By tuning a polarization controller (PC) within the Sagnac loop filter, stable multiwavelength 1550-nm operation with up to 17 lasing lines within 3 dB power level variation and with a wavelength spacing of ~ 0.8 nm was achieved. The optical signal-to-noise ratios (OSNRs) of all the lasing wavelengths are greater than 40 dB..

Keywords

Multiwavelength, fiber laser, Sagnac loop filter, Polarization maintaining, Semiconductor optical amplifier.

Submitted at: April 7, 2008
Accepted at: Oct. 7, 2008

Citation

D. LIU, Y. LIU, H. WANG, A stable multiwavelength SOA ring laser with equalized power spectrum, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 10, pp. 2519-2521 (2008)