Title :
High-repetition-rate pulsed-pump fiber OPA for amplification of communication signals
Author :
Kalogerakis, Georgios ; Shimizu, Katsuhiro ; Marhic, MichelE ; Wong, Kenneth Kin-Yip ; Uesaka, Katsumi ; Kazovsky, Leonid G.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA
Abstract :
The use of a high-repetition-rate pulsed-pumped fiber optical parametric amplifier (OPA), followed by a narrow optical filter for transparent signal amplification, was proposed. Theory and simulations predict larger gain and gain bandwidth compared to a continuous-wave pump with the same average power. Experimentally, when using a pump with 0.63 W of average power in a 500-m-long highly nonlinear fiber, the gain increased from 19.7 to 29.2 dB, and the bandwidth increased when a CW pump was changed to one that is modulated by a 20-GHz cosine-squared function. Clear eye openings were demonstrated for the amplification of a 10-Gb/s NRZ signal, with a power penalty of 1.5 dB
Keywords :
nonlinear optics; optical communication equipment; optical fibre amplifiers; optical fibre communication; optical filters; optical modulation; optical parametric amplifiers; optical pumping; transparency; 0.63 W; 10 Gbit/s; 19.7 dB; 20 GHz; 29.2 dB; 500 m; communication signal amplification; continuous-wave pump; cosine-squared function; fiber optical parametric amplifier; gain bandwidth; high-repetition-rate fiber; highly nonlinear fiber; narrow optical filter; nonreturn to zero signal; optical gain; optical parametric amplifier; power penalty; pulsed-pump fiber; transparent signal amplification; Bandwidth; Fiber nonlinear optics; Optical fiber amplifiers; Optical fiber communication; Optical fiber theory; Optical filters; Optical pulses; Optical pumping; Pulse amplifiers; Stimulated emission; Optical amplifier; optical parametric amplifier (OPA); pulsed pump; pulsed reshape;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.878012
