Optical waveguides – With optical coupler – Particular coupling structure
Reexamination Certificate
2006-05-16
2006-05-16
Lee, Hwa (Andrew) (Department: 2877)
Optical waveguides
With optical coupler
Particular coupling structure
C385S123000
Reexamination Certificate
active
07046881
ABSTRACT:
The present invention relates a method for manufacturing an optical coupler/splitter. A Y-shaped waveguide core is formed by focusing a laser beam into a cladding layer that is formed from a glass material. At least one portion of this Y-shaped waveguide core other than the input port and the output ports is treated as a refractive index adjustment area. After the portions of the Y-shaped waveguide core other than the refractive index adjustment area have been formed by focusing a laser beam, signal light is inputted into the input port of the Y-shaped waveguide core and the signal light outputted from the output ports of the Y-shaped waveguide core are monitored. The refractive index of the refractive index adjustment area is determined based on the result of the monitoring and is adjusted by focusing a laser beam repeatedly.
REFERENCES:
patent: 5978538 (1999-11-01), Miura et al.
patent: 6154593 (2000-11-01), Miura et al.
patent: 6-51145 (1994-02-01), None
patent: 7-63936 (1995-03-01), None
patent: 9-311237 (1997-12-01), None
patent: 10-288799 (1998-10-01), None
patent: 10-332971 (1998-12-01), None
patent: 11-167036 (1999-06-01), None
patent: 11-231151 (1999-08-01), None
patent: 2001-311847 (2001-11-01), None
Davis, K., et al., “Writing waveguides in glass with a femtosecond laser,” Optics Letters, vol. 21, No. 21, Nov. 1, 1996, pp. 1729-1731.
Miura, K., et al., “Photowritten optical waveguides in various glasses with ultrashort pulse laser,” Applied Physics Letter, vol. 71, No. 23, Dec. 8, 1997, pp. 3329-3331.
Miura, K., et al., “Photo-Induced Refractive Index Changes in Glasses with Ultra-Short Pulse Laser,” Laser Review, Feb., 1998, pp. 150-154.
Miura, K., “Photowritten Optical Waveguide in Various Glasses with a Femtosecond Laser,” Hirao Active Glass Project NEWS Final, Aug. 1999, pp. 5-12.
Miura, K., et al., “Preparation and optical properties of fluoride glass waveguides induced by laser pulses,” Journal of Non-Crystalline Solids 256&257, 1999, pp. 212-219.
Homoelle, D., et al., “Infrared photosensitivity in silica glasses exposed to femtosecond laser pulses,” Optical Letters, vol. 24, No. 18, Sep. 15, 1999, 1999, pp. 1311-1313.
Kondo, Y., et al., “Glass machining by femtosecond laser pulses,” Jpn. Journal Applied Physics, vol. 69, No. 4, 2000, pp. 411-414.
Streltsov, A., et al., “Fabrication and analysis of a directional coupler written in glass by nanojoule femtosecond laser pulses,” Optics Letters, vol. 26, No. 1, Jan. 1, 2001, pp. 42-43.
Schaffer, C., et al., “Micromachining bulk glass by use of femtosecond laser pulses with nonojoule energy,” Optics Letters, vol. 26, No. 2, Jan. 15, 2001, pp. 93-95.
Schaffer, C., et al., “Micromachining using ultrashort pulses from a laser oscillator,” Optics & Photonics News, Apr. 2001, pp. 20-23.
Sudrie, L., et al., “Study of damage in fused silica induced by ultra-short IR laser pulses,” Optics Communications 191, May 8, 2001, pp. 333-339.
Minoshima, K., et al., “Femtosecond nonlinear fabrication of glass photonic devices by an unamplified laser,” The 8thInternational Workshop on Femtosecond Technology, Jun. 28-29, 2001, Tsukuba, Japan, pp. 159.
Efimov, O., et al., “Waveguide writing in chalcogenide glasses by a train of femtosecond laser pulses,” Optical Materials 17, (2001), pp. 379-386.
Kondo et al., “Fabrication of long-period fiber gratings by focused irradiation of infrared femtosecond laser pulses,” Optic Letters, vol. 24, No. 10, May 15, 1999, pp. 646-648.
Kondo et al., “Long Period Fiber Grating By Focused-Irradiation Of Femtosecond Laser Pulses,” Extended Abstracts of the 46thSpring Meeting of the Japan Society of Applied Physics and Related Societies, No. 3, 1999, p. 1238.
Hosoya Hideyuki
Ishikawa Shimon
Ogawa Hirokuni
Sakuma Ken
Shikata Tomoko
Fujikura Ltd.
Lee Hwa (Andrew)
LandOfFree
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