Optical waveguides – Polarization without modulation
Reexamination Certificate
2005-01-04
2005-01-04
Healy, Brian M. (Department: 2874)
Optical waveguides
Polarization without modulation
C385S028000, C385S031000, C385S038000, C385S123000, C385S043000, C385S124000, C385S027000, C385S007000, C385S029000
Reexamination Certificate
active
06839473
ABSTRACT:
This invention relates to a method of making optical fiber having low polarization dependence and an acousto-optical filter with low PDL. A section of the fiber is heated and then allowed to cool. At least the heating is controlled to reduce stresses in a cladding layer surrounding a core of the interaction length after the interaction length is allowed to cool to reduce polarization dependence of the cladding layer. Preferably, at least time and temperature of heating is controlled.
REFERENCES:
patent: 4298245 (1981-11-01), Aulich et al.
patent: 4915468 (1990-04-01), Kim et al.
patent: 5506925 (1996-04-01), Greene et al.
patent: 5704960 (1998-01-01), Evans et al.
patent: 5822487 (1998-10-01), Evans et al.
patent: 5953121 (1999-09-01), Bohnert et al.
patent: 6021237 (2000-02-01), Kim et al.
patent: 6169830 (2001-01-01), Kewitsch et al.
patent: 6233379 (2001-05-01), Kim et al.
patent: 6266462 (2001-07-01), Kim et al.
patent: 6459834 (2002-10-01), Kim et al.
patent: 6532323 (2003-03-01), Kim et al.
patent: 6597839 (2003-07-01), Mihailov et al.
patent: 10-0265865 (2000-06-01), None
Kim et al., “Optical Fiber Cladding with low Polarization . . . ”, U.S. patent application Publication No. U.S. 200/0044711A1, published Apr. 18, 2002.*
PCT/US 03/01245 International Search Report mailed on May 26, 2003.
“Production of Single-Mode Fibres with Negligible Intrinsic Birefringence and Polarisation Mode Dispersion”, Electronics Letters, IEE Stevenage, GB, vol. 17, No. 20, Oct. 1, 1981 pp. 725-726, XP000676219 ISSN: 0013-5194.
Kyunghwan Oh et al., “Polarization dependent dispersion characteristics of high order modes in a cylindrical dual mode fiber with an arbitrary index profile”, Optics Communication, vol. 159, Jan. 1, 1999 pp. 139-148, XP004152383.
Seok Hyun Yun et al. “Suppression of Polarization Dependence in a Two-Mode-Fiber Acousto-Optic Device”, Optics Letters/vol. 21, No. 12/ Jun. 15, 1996, 1996 Optical Society of America, pp. 908-910.
Seok Hyun (Andy) Yun, “All-Fiber Acousto-Optic Devices and Their Applications to Fiber Lasers”, Thesis, Department of Physics, Korea Advanced Institute of Science and Technology, Jun. 13, 1997, pp. whole document.
Salamon David Vigdor
Yun Seok-Hyun
Healy Brian M.
Novera Optics, Inc.
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