Title :
High-sensitivity receiver optical preamplifiers
Author :
Kannan, K. ; Bartos, A. ; Atherton, P.S.
Author_Institution :
OTC Ltd., Sydney, NSW, Australia
fDate :
3/1/1992 12:00:00 AM
Abstract :
High-receiver sensitivities of -40.9, -44.3, -46.2, -49.0, and -51.3 dBm are reported at 2.4, 1.8, 1.2, 0.62, and 0.14 Gb/s, respectively, using a low-noise, 980-nm diode-pumped, erbium fiber amplifier in the receiver preamplifier configuration with all field usable components. This corresponds to a best sensitivity of 156 photons/bit at the input of the optical amplifier (96 photons/bit at the input of the erbium-doped fiber). Selection of a low-chirp laser-diode transmitter, an optical filter with a bandwidth appropriate for filtering the signal, and a low-noise electrical amplifier with appropriate bandwidth in the post detection stage are all critical to achieve very high-receiver sensitivities.<>
Keywords :
fibre lasers; optical communication equipment; preamplifiers; receivers; 0.14 Gbit/s; 0.62 Gbit/s; 1.2 Gbit/s; 1.8 Gbit/s; 2.4 Gbit/s; 980 nm; bandwidth; field usable components; high sensitivity; low noise diode pumped Er fibre amplifier; low-chirp laser-diode transmitter; low-noise electrical amplifier; optical filter; post detection stage; receiver optical preamplifiers; Erbium-doped fiber amplifier; Low-noise amplifiers; Optical fiber amplifiers; Optical filters; Optical receivers; Optical sensors; Optical transmitters; Preamplifiers; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
