Optical fiber birefringence measurement method and...

Details Optical fiber birefringence measurement method and... Optical fiber birefringence measurement method and...

2007-10-10

2008-12-09

Geisel, Kara E (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07463346

ABSTRACT:
In a method of measurement of the birefringence of an optical fiber, the round-trip Jones matrix R(z) for a first interval (0, z) from a measurement starting point0in the optical fiber for measurement to a prescribed position z, and the round-trip Jones matrix R(z+Δz) for a second interval (0, z+Δz) from the measurement starting point0to a position z+Δz differing from the position z, are acquired, the eigenvalues ρ1, ρ2of the matrix R(z+Δz)R(z)−1are determined, and by computing the following equations (1) and (2),ϕ=arg⁡(ρ1ρ2)2(1)Δ⁢⁢n=λϕ2⁢π·Δ⁢⁢z(2)(where φ represents the phase difference between linear polarization components due to birefringence, Δn represents birefringence, and λ represents wavelength), the birefringence in the infinitesimal interval Δz from the position z to the position z+Δz is obtained.

REFERENCES:
patent: 6946646 (2005-09-01), Chen et al.
patent: 2001/0022883 (2001-09-01), Montmorillon et al.
patent: 2002/0028051 (2002-03-01), Bickham et al.
patent: 2002/0085195 (2002-07-01), Allen et al.
patent: 2004/0136636 (2004-07-01), Rogers
patent: 2002-48680 (2002-02-01), None
patent: 2002-338140 (2002-11-01), None
patent: 2004-525388 (2004-08-01), None
patent: 2005-283136 (2005-10-01), None
patent: WO 2004/010098 (2004-01-01), None
patent: WO 2004/045113 (2004-05-01), None
Tomioka et al., “Fiber Evaluation by round-trip PMD based on Jones Matrix Eigenanalysis and Spatial Frequency Spectrum with OTDR Polarimetry”, Jul. 2002, Seventh Optoelectronics and Communications Conference Technical Digest, pp. 488-489.
Ishii et al., “Precise Determination of Local Birefringence of Optical Fibers by Long-Period Fiber Grating Analysis”, 2002, OFC, pp. 686-688.
Tanigawa, et al., “Henpa OTDR o Mochiita Fiber Nagate Hoko PMD no Hyokaho (Evaluation of Longitudinal PMD Distribution along Optical Fibers Using Polarization OTDR)”, IEICE Technical Report, 2003, pp. 41-46, vol. 103, No. 91.
Rogers, et al., “Computational Polarization—optical time domain reflectometry for measurement of the spatial distribution of PMD in optical fibres”, OFMC '97. 4thOptical Fibre Measurement Conference. Conference Digest, 1997, pp. 126-129.
E. Chausse et al., “POTDR, depolarization and detection of sections with large PMD”, OFMC 95'.
Tadao Tsuruta, Ouyou Kougaku 2, pp. 197-200, published by Baifukan Co., Ltd, no date.
R. Clark Jones, “A New Calculus for the treatment of Optical Systems VI. Experimental Determination of the Matrix”, Journal of the Optical Society of America, vol. 37, No. 2, pp. 110-112, 1947.
N. Gisin et al., “How Accurately Can One Measure a Statistical Quantity Like Polarization-Mode Dispersion?”, IEEE Photonics Technology Letters, vol. 8, No. 12, pp. 1671-1673, Dec. 1996.
B.L. Heffner, “Automated Measurement of Polarization Mode Dispersion Using Jones Matrix Eigenanalysis”, IEEE Photonics Technology Letters, vol. 4, No. 9, pp. 1066-1069, Dec. 1992.

Affiliated with

Also associated with

Rating

Optical fiber birefringence measurement method and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical fiber birefringence measurement method and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber birefringence measurement method and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4034658