Evaluation of polarization mode coupling coefficient from measurement of polarization mode dispersion

• Published in: Journal of lightwave technology Vol. 3; no. 4; pp. 850 - 854
• Main Authors: Tsubokawa, M., Shibata, N., Seikai, S.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-01-1985; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Birefringence; Circuit properties; Delay; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Integrated optics. Optical fibers and wave guides; Length measurement; Optical and optoelectronic circuits; Optical detectors; Optical fiber polarization; Optical mixing; Optical saturation; Optical sensors; Polarization mode dispersion; Wavelength measurement; Measurement; Single mode waveguide; Mode coupling; Birefringence; Optical waveguide; Modal dispersion; Optical fiber; Polarization mode
• ISSN: 0733-8724; 1558-2213
• DOI: 10.1109/JLT.1985.1074287

Polarization mode coupling coefficient is evaluated from the measurement of polarization mode dispersion as a function of fiber length in a single-mode fiber having an elliptical-core with 10-percent ellipticity. The modal dispersion measurement are carried out by the improved spatial technique based on an optical heterodyne detection at the wavelengths of 0.85 and 1.3 μm. The coupling coefficients are evaluated from the measurements to be 3.4 \times 10^{-3} and 4.6 \times 10^{-3} m -1 for modal-birefringence magnitudes of 8 \times 10^{-6} and 3 \times 10^{-6} , respectively. The coupling coefficients obtained from the dispersion measurement are coincident with those evaluated from the extinction-ratio measurements. In addition, dependence of the coupling coefficient on propagation constant difference between the two orthogonally polarized HE 11 modes is investigated based on Lorentzian power spectrum model.