Novel bidirectional path measurement of polarization cross-coupling distribution in PMF

Jing Jin; Shu Wang; Jingming Song; Ningfang Song; Zuoming Sun; Yue Pan

doi:10.1117/12.2034730

29 August 2013 Novel bidirectional path measurement of polarization cross-coupling distribution in PMF

Jing Jin, Shu Wang, Jingming Song, Ningfang Song, Zuoming Sun, Yue Pan

Proceedings Volume 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography; 891415 (2013) https://doi.org/10.1117/12.2034730
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

The measurement accuracy of polarization cross-coupling strength based on white-light interferometry obviously decreases in long-distance polarization maintaining fiber (PMF), due to the difference of dispersion between two eigenmodes (birefringence dispersion). In this paper, we demonstrate a bidirectional measurement method with the scheme including a polarization maintaining coupler, a magnetic optical circulator and an Optical Coherence Domain Polarimeter (OCDP). The experiment setup and results are described in detail. The cross-coupling distribution results from each direction measurement were processed to mitigate the influence of dispersion. The compensation is conducted on coupling strength results, instead of raw interference signal in traditional method. The method saves the investigation of birefringence dispersion coefficient and light source parameters compared with compensation in frequency domain. Our experiment with a PMF coil of 200m length demonstrates the effectiveness in improving strength accuracy with absolute deviation less than 0.31dB, and spatial resolution recovered to 8.4cm.

Citation Download Citation

Jing Jin, Shu Wang, Jingming Song, Ningfang Song, Zuoming Sun, and Yue Pan "Novel bidirectional path measurement of polarization cross-coupling distribution in PMF", Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 891415 (29 August 2013); https://doi.org/10.1117/12.2034730

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KEYWORDS

Polarization

Birefringence

Dispersion

Spatial resolution

Light sources

Michelson interferometers

Geometrical optics

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