Title :
High-Sensitivity Optical Preamplifier for WDM Systems Using an Optical Parametric Amplifier
Author :
Liang, Yu ; Li, Jia ; Chui, P.C. ; Wong, Kenneth K Y
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
We propose and demonstrate a novel preamplifier to improve receiver sensitivity for a 10-Gb/s return-to-zero on-off keying format by using a fiber optical parametric amplifier. Receiver sensitivity can reach down to -42 dBm at bit-error rate = 10-9. This sensitivity is only 1.1 dB off the quantum limit. The crosstalk issue is also investigated for this dual-end detection scheme in a wavelength-division-multiplexing system.
Keywords :
optical crosstalk; optical fibre amplifiers; optical fibre communication; optical parametric amplifiers; preamplifiers; radio receivers; wavelength division multiplexing; WDM systems; crosstalk; fiber optical parametric amplifier; high-sensitivity optical preamplifier; quantum limit; receiver sensitivity; Optical parametric amplifier (OPA); preamplifier; receiver sensitivity;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2030507
