Title :
Rayleigh scatter measurements of a 42 km single-mode fibre at 1.55 ¿m wavelength using an LD and an LN2 cooled Ge-PIN detector
Author :
Fujise, M. ; Kuwazuru, M.
Author_Institution :
KDD Laboratories, Tokyo, Japan
Abstract :
A 42 km single-mode fibre has been observed by an OTDR at 1.55 ¿m wavelength utilising a semiconductor laser and a Ge-PIN photodiode cooled to 77 K with liquid nitrogen together with a feedback resistor of a transimpedance amplifier. The dark current and the thermal noise have been drastically decreased.
Keywords :
Rayleigh scattering; optical fibres; thermal noise; time-domain reflectometry; 1.55 micron wavelength; 42 km single-mode fibre; Ge PIN photodiode; OTDR; Rayleigh scattering; dark current; feedback resistor; liquid N2 temperature; optical receiver; semiconductor laser; thermal noise; time domain reflectometry; transimpedance amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840156
