Title :
Flat-Gain L-Band Raman-EDFA Hybrid Optical Amplifier for Dense Wavelength Division Multiplexed System
Author :
Singh, Sushil ; Kaler, R.S.
Author_Institution :
Thapar Univ., Patiala, India
Abstract :
An efficient gain-flattened L-band optical amplifier is demonstrated using a hybrid configuration with a distributed Raman amplifier (DRA) and an erbium-doped fiber amplifier (EDFA) for 160 × 10-Gb/s dense wavelength division multiplexed system at 25-GHz interval. With an input signal power of 3 mW, a flat gain of >; 10 dB is obtained across the frequency range from 187 to 190.975 THz with a gain variation of <; 4.5 dB without using any gain-flattening technique. The output power obtained at 3-mW optimum input power is also the highest value (>; 8.9 dBm) ever reported for a DRA-EDFA hybrid optical amplifier at reduced channel spacing.
Keywords :
Raman lasers; erbium; optical communication equipment; optical fibre amplifiers; wavelength division multiplexing; Raman-EDFA hybrid optical amplifier; bit rate 10 Gbit/s; channel spacing; dense wavelength division multiplexed system; distributed Raman amplifier; frequency 187 THz to 190.975 THz; frequency 25 GHz; gain flattening; power 3 mW; Erbium-doped fiber amplifier; Gain; Optical fiber amplifiers; Stimulated emission; Wavelength division multiplexing; Dense wavelength division multiplexed (DWDM) system; gain flatness; hybrid optical amplifier;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2231406
