Multiwavelength Fiber Lasers and Zero-broadening Slow and Fast Light Propagation Based on Stimulatde Brillouin Scattering
|School||Jiangxi Normal University|
|Keywords||stimulated Brillouin scattering (SBS) semiconductor optical amplifier (SOA) multi-wavelength fiber lasers slow light and fast light|
At present, high-capacity and high-speed optical fiber communication hasdrawn widespread attention, multi-wavelength fiber laser can be very appropriate forlight source of the wavelength division multiplexing (DWDM) system. On the otherhand, slow and fast light means to control the speed of light, which can be used inoptical storage, optical switching and optical routing.In this dissertation, a stable Brillouin multi-wavelength tunable fiber laser basedon semiconductor optical amplifier (SOA) is proposed and implemented. Theinhomogeneous broadening of SOA and the nonlinear gain characteristic of stimulatedBrillouin scattering (SBS) can be used to suppress mode competition, increase thewavelength number of laser output and obtain a stabler multi-wavelength output. Atthe same time, the reflection spectrum of a birefringent fiber loop filter can beadjusted, thus implement the tunability of the multi-wavelength output. Ultimately, anaverage of79output channels with0.08nm channel spacing and21nm tuning rangehas been achieved.Moreover, this dissertation also proposed and proved slow and fast light usingSBS can be used to realize dispersion compensation for the transmission light. Thepulse broadening in the fast light system can be minimal by this way. Meanwhile,taking the advantage of ring cavity, absorption loss can be reduced to achieve fastlight.