SOA BASED FIBER RING LASER WITH FIBER BRAGG GRATING

作者：Ahmad H^*; Ooi H C; Sulaiman A H; Thambiratnam K; Zulkifli M Z; Harun S W

来源：Microwave and Optical Technology Letters, 2008, 50(12): 3101-3103.

DOI：10.1002/mop.23895

• semiconductor optical amplifier
• fiber bragg grating
• fiber laser

A semiconductor optical amplifier fiber ring laser (SOAFRL) utilizing a Fiber Bragg Grating (FBG) is demonstrated. The laser operates at a wavelength of 1547.64 nm, equal to the Bragg wavelength. By removing FBG, the SOAFRL shows a multi-modes output due to the resonant characteristics of the semiconductor optical amplifiers (SOA's) gain. The output power ripple is observed around 5 dB. The experimental results show that when the saturation level is reached, the SOAFRL with the FBG shows a higher saturation current and peak power compared to that of the SOAFRL without the FBG. Mode competition in the cavity for the free-running ring SOAFRL results in a lower peak power as well as a broader bandwidth as the current is increased. By incorporating the FBG in the SOAFRL, a lasing wavelength is generated and as such the side mode suppression ratio (SMSR) of the laser is significantly improved, resulting in a higher peak power at higher bias currents.

• 出版日期2008-12