Title :
Compact, wideband coherent receiver module with 78% external quantum efficiency
Author :
Tabuchi, H. ; Hamaguchi, Hiroki ; Mikawa, T.
Author_Institution :
Fujitsu Labs. Ltd., Atsugi, Japan
Abstract :
A compact, low-profile, front-end module consisting of a fused fibre coupler and a twin p-i-n photodiode for balanced heterodyne receivers is described. Special packaging and mounting techniques ensure excellent performance from a module only 7 mm high. Figures of merit include a 16.8 GHz wideband response, an extremely low 0.8 dB optical loss, and an overall external quantum efficiency of 78%.
Keywords :
modules; optical communication equipment; optical couplers; p-i-n diodes; packaging; photodiodes; receivers; 0.8 dB; 16.8 GHz; 78 percent; PIN diode; balanced heterodyne receivers; coherent receiver module; external quantum efficiency; front-end module; fused fibre coupler; low-profile; mounting techniques; optical loss; packaging; twin p-i-n photodiode; wideband;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921226
