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1.5µm Range Optical Time Domain Reflectometry Utilizing an LD and a Cooled InGaAs/InP APD
Kenji SHIMIZU Masayuki FUJISE
IEICE TRANSACTIONS (1976-1990)
Publication Date: 1987/04/25
Print ISSN: 0000-0000
Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1987 National Convention IEICE)
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A Rayleigh backscattered signal over a 64 km single-mode fiber has been successfully observed by a long-range OTDR utilizing a 1.5µm LD and an InGaAs/InP APD cooled to 0 with a Peltier's thermodevice, which improves 9.0 dB in the detector sensitivity in comparison with a Ge-APD at room temperature.