Title :
Impedance-matched optical link for C-band satellite applications
Author :
Markey, Brian J. ; Paul, Dilip K. ; Razdan, Rajender ; Pontano, Benjamin A. ; Dutta, Niloy K.
Author_Institution :
COMSAT Lab., Clarksburg, MD, USA
fDate :
9/1/1995 12:00:00 AM
Abstract :
Optical transmitter and receiver modules with passive impedance-matching circuits have been designed, constructed, and tested. A direct current modulated InGaAs DFB laser, operating at 1.3 micron, and an InGaAs PIN photodiode were matched to 50 ohms with passive, mixed lumped and distributed element, matching circuits. A link-insertion loss of 21 dB with a 3 dB bandwidth of 900 MHz has been demonstrated. Through the use of higher-order matching circuits, link-insertion loss variations across the satellite downlink frequency band (3.6-4.2 GHz) have been kept below ±0.5 dB
Keywords :
distributed feedback lasers; distributed parameter networks; impedance matching; lumped parameter networks; microwave links; optical fibre communication; optical modulation; optical receivers; optical transmitters; p-i-n photodiodes; passive networks; satellite communication; semiconductor lasers; 1.3 micron; 21 dB; 3.6 to 4.2 GHz; 50 ohm; 900 MHz; C-band satellite applications; InGaAs; PIN photodiode; SHF; bandwidth; direct current modulated laser; distributed element; higher-order matching circuits; impedance-matched optical link; link-insertion loss; lumped element matching circuits; optical receiver modules; optical transmitter modules; passive element matching circuits; passive impedance-matching circuits; satellite downlink frequency band; Circuit testing; Impedance; Indium gallium arsenide; Optical design; Optical fiber communication; Optical losses; Optical receivers; Optical transmitters; PIN photodiodes; Satellites;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
