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Optical fiber component characterization by high-intensity and high-spatial-resolution interferometric optical-time-domain reflectometer

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4 Author(s)
Kobayashi, M. ; NTT Opto-Electron. Lab., Ibaraki, Japan ; Taylor, H.F. ; Takada, K. ; Noda, J.

An interferometric optical-time-domain reflectometer (OTDR) is demonstrated. A low-coherence interferometer is used and balanced and narrowband detections are performed. The reflectometer has a detectable limit of -130 dB (which is 10 dB lower than the Rayleigh scattered light power in the fiber) and a spatial resolution of 20 mu m. The modal birefringence of a polarization-maintaining fiber and the coupling characteristics of a fiber coupler are successfully measured from their reflectance profiles.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:3 ,  Issue: 6 )