Quasi-distributed birefringence dispersion measurement for polarization maintain device with high accuracy based on white light interferometry.

A white light temporal interferometric technique for measurement of the quasi-distributed birefringence dispersion (BD) in a polarization maintain (PM) device with high accuracy based on weighted least square (WLS) method is presented. It is verified theoretically and experimentally that the accuracy of WLS method and the conventional ordinary least square (OLS) method both are proportional to the signal-to-noise ratio (SNR) of interferogram, whereas the WLS method holds a higher scaling factor because it is more suitable for heteroscedastic model that has unequal error variance. The experiment results show a repeatability of ~4.6 × 10(-5) ps/nm @ 1550 nm with WLS method for 100 sets of data, and ~4.3 × 10(-4) ps/nm with OLS method, for an interferogram with SNR of 30 dB. Besides, WLS method without iterative operation is carried out by using power spectrum of interferogram as weight value. The feasibility of this technique is demonstrated by distinguishing the quasi-distributed BD of every part for a packaged Y-waveguide with two 1m-long PM pigtails.

[1]  Tonglei Cheng,et al.  Dispersion characterization of two orthogonal modes in a birefringence tellurite microstructured optical fiber. , 2014, Optics express.

[2]  R. Szipőcs,et al.  Measurement of higher order chromatic dispersion in a photonic bandgap fiber: comparative study of spectral interferometric methods. , 2014, Applied optics.

[3]  Jianping Yao,et al.  Multitap Microwave Photonic Filter With Negative Coefficients Based on the Inherent Birefringence in a $\hbox{LiNbO}_{3}$ Phase Modulator , 2013, IEEE Photonics Journal.

[4]  Wencai Jing,et al.  Characterization of birefringence dispersion in polarization-maintaining fibers by use of white-light interferometry. , 2007, Applied optics.

[5]  Dug Young Kim,et al.  Versatile chromatic dispersion measurement of a single mode fiber using spectral white light interferometry. , 2006, Optics express.

[6]  U. Keller,et al.  Noise-related resolution limit of dispersion measurements with white-light interferometers , 2005 .

[7]  X. Yi,et al.  Continuously tunable microwave-photonic filter design using high-birefringence linear chirped grating , 2003 .

[8]  Roy McBride,et al.  Dispersion of birefringence and differential group delay in polarization-maintaining fiber. , 2002, Optics letters.

[9]  M. Ludowise,et al.  High-power semiconductor edge-emitting light-emitting diodes for optical low coherence reflectometry , 1995 .

[10]  T. Hosaka,et al.  Polarization-dependent chromatic dispersion in birefringent optical fibers. , 1987, Optics letters.

[11]  K. Okamoto,et al.  Polarization-maintaining fibers and their applications , 1986 .

[12]  Kun Liu,et al.  Influence of birefringence dispersion on a distributed stress sensor using birefringent optical fiber , 2009 .

[13]  Wenzin Zheng,et al.  Automated fusion-splicing of polarization maintaining fibers , 1997 .

[14]  W. Bock,et al.  Analysis of dispersion effects for white-light interferometric fiber-optic sensors. , 1994, Applied optics.