Title :
Low-noise receivers for fiber optic communications
Author :
Patterson, David R. ; Webb, Paul ; Bechtle, Dan
Author_Institution :
David Sarnoff Res. Center, Princeton, NJ, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
Improvements in fiber-optic direct detection receivers are reported. Very-low-noise avalanche photodiodes were developed for use in up to 2-Gb/s transmission rates with noise characteristics of less than 0.6 pA/Hz/sup 1/2/ at a gain of 10. The detectors were coupled to both transimpedance and high-impedance low-noise amplifiers utilizing commercially available HEMT (high-electron-mobility-transistor) devices. The best sensitivity at 1310 nm was -45.75 dBm and -46.75 dBm at 1548 nm for a nonreturn-to-zero pattern at 565 Mb/s.<>
Keywords :
avalanche photodiodes; electron device noise; optical communication equipment; receivers; 1310 nm; 1548 nm; 2 Gbit/s; 565 Mbit/s; HEMT; avalanche photodiodes; fiber optic communications; fiber-optic direct detection receivers; high-electron-mobility-transistor; high-impedance low-noise amplifiers; noise characteristics; nonreturn-to-zero pattern; sensitivity; transimpedance amplifiers; transmission rates; Capacitance; Dark current; Detectors; HEMTs; Low-noise amplifiers; Noise measurement; Optical fiber communication; Optical noise; Optical receivers; Voltage;
Journal_Title :
Photonics Technology Letters, IEEE
