Suppression of wavelength-dependent polarization fading using hybrid-polarization scheme in OFDR.
Opt Express
; 32(2): 1552-1561, 2024 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-38297704
ABSTRACT
What we believe to be a new hybrid-polarization diversity scheme which can eliminate the polarization state variation caused by wavelength tuning of laser in optical frequency domain reflectometry is proposed in the paper. In the scheme, a 45° polarizer is used to maintain the polarization of signals. It decreases the polarization angle fluctuation to 2.81° and realizes a -145 dB test sensitivity with a 32 dB Rayleigh scattering signal-to-noise ratio in a 10 m fiber single test. The polarization fading suppression is achieved for tests with a large wavelength tuning range from 1480 nm to 1640 nm. Meanwhile, a 6 µm spatial resolution is also achieved. The proposed scheme can be applied to the structure measurement of high-precision optical fiber devices with high spatial resolution and sensitivity.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
Opt Express
Ano de publicação:
2024
Tipo de documento:
Article