Title :
Polarization-adjustment-free OLCR using orthogonal polarization switching
Author :
Takada, K. ; Okamoto, K.
Author_Institution :
Photon. Lab., NTT Corp., Ibaraki, Japan
Abstract :
We report a highly sensitive polarization-independent optical low coherence reflectometer (OLCR) which employs orthogonal polarization switching. Fresnel reflection and Rayleigh backscattering distributions from a device under test can be obtained without adjusting the states of polarization (SOP) of the OLCR local oscillator light. The residual variations in the signal against the SOP change mere within 10.45 and /spl plusmn/0,55 dB at 1.5- and 1.3-μm bands, respectively.
Keywords :
Faraday effect; Rayleigh scattering; backscatter; light interferometry; light reflection; optical fibre polarisation; optical fibre testing; optical switches; reflectometers; sensitivity; 1.3 mum; 1.5 mum; Fresnel reflection; OLCR local oscillator light; Rayleigh backscattering distributions; device under test; highly sensitive polarization-independent optical low coherence reflectometer; orthogonal polarization switching; polarization-adjustment-free OLCR; residual variations; states of polarization; Backscatter; Delay lines; Fresnel reflection; Optical coupling; Optical fiber polarization; Optical interferometry; Optical noise; Optical polarization; Optical sensors; Testing;
Journal_Title :
Photonics Technology Letters, IEEE
