Title :
Optical time-domain reflectometry with centimetre resolution at 10-15 W sensitivity
Author :
Ripamonti, G. ; Cova, S.
Author_Institution :
CNR, Centro di Elettronica Quantistica e Strumentazione Elettronica, Politecnico di Milano, Istituto di Fisica and Dipartimento di Elettronica, Milano, Italy
Abstract :
We report photon-counting optical time-domain refiectometry tests performed at 0.83 μm wavelength with a special silicon detector, the single-photon avalanche diode (SPAD). High sensitivity and centimetre resolution are demonstrated, suitable for accurate local characterisation of fibre systems and components (connectors, couplers etc.).
Keywords :
optical fibres; optical testing; optical variables measurement; time-domain reflectometry; OTDR; SPAS; accurate local characterisation of fibre systems; centimetre resolution; photon-counting optical time-domain reflectometry tests; sensitivity 1 fW; single-photon avalanche diode;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860561
