Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2008-04-29
2008-04-29
Pak, Sung (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
Reexamination Certificate
active
11213412
ABSTRACT:
An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras. These cameras are aligned substantially orthogonally. A position of the beam spot is determined. The beam spot is aligned to a starting position within the region. This position is within a portion of the fiber to be machined for which the beam path passes through the greatest length of material. The beam spot is scanned along a path designed to pass the beam spot through all of the portion to be machined such that the beam path does not pass through previously machined material. The laser pulses, which have a duration of less than about 1 ns, are generated as the beam spot is scanned.
REFERENCES:
patent: 4911516 (1990-03-01), Palfrey et al.
patent: 5848204 (1998-12-01), Wanser
patent: 6195483 (2001-02-01), Moon et al.
patent: 6229939 (2001-05-01), Komine
patent: 6282341 (2001-08-01), Digonnet et al.
patent: 6633419 (2003-10-01), Hosono et al.
patent: 7031571 (2006-04-01), Mihailov et al.
patent: 7174077 (2007-02-01), Howard
patent: 2002/0003926 (2002-01-01), Enomoto et al.
patent: 2003/0138229 (2003-07-01), Paek et al.
patent: 2004/0184734 (2004-09-01), Mihailov et al.
patent: 2004/0252939 (2004-12-01), Gaylord et al.
patent: 2005/0194365 (2005-09-01), Li
patent: 2007/0091977 (2007-04-01), Sohn et al.
patent: 0 978 738 (2000-02-01), None
patent: 2003-279759 (2003-10-01), None
patent: 2003279759 (2003-10-01), None
patent: 2004 038017 (2004-02-01), None
patent: WO 01/54853 (2001-08-01), None
Mihalov S J et al Optical Society of America/Institute of Electrical and Electronics Engineers: “Fiber Bragg Gratings (FBG) Made With A Phase Mask and 800-nm Femtosecond Radiation” Optical Fiber Communication Conference (OFC). Post Conference Digest. Atlanta, GA Mar. 23-28, 2003, Trends In Optics and Photonics Series. (TOPS), Washington, DC; OSA, US vol. TOPS. vol. 86, Mar. 23, 2003, (Feb. 23, 2003), pp. PD30-01, XP010680610 (the whole document).
Kashyap R et al: “UV Written Reflection Grating Structures In Photosensitivie Optical Fibres Using Phase-Shifted Phase Mask” Electronics Letters, IEE Stevenatge, GB, vol. 30, No. 23, Nov. 10, 1994, pp. 1977-1978, XP006001347; ISSN: 0013-5194 (the whole document).
Ostlender A et al: Metrology For Laser-Structured Microdevices By CCD-Camera Based Vision Systems: Proceedings of the SPIE, SPIE, Bellingham VA, US, vol. 4178, 2000, pp. 197-206, XP002326972 ISSN: 0277-786X, (the whole document).
PCT International Search Report; PCT/US2005/036499; Completed Mar. 8, 2006.
K. O. Hill et al.; Photosensitivity in Optical Fiber Waveguides: Application to Reflection Filter Fabrication; Applied Physics Letters 32(10). pp. 647-649, May 1978.
Jia Jimmy Yi-Jie
Li Ming
Liu Xinbing
Ohara Tetsuo
Singh Rajminder
Matsushita Electric - Industrial Co., Ltd.
Pak Sung
RatnerPrestia
LandOfFree
Ultrafast laser machining system and method for forming... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrafast laser machining system and method for forming..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrafast laser machining system and method for forming... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3950090