Optical waveguides – With optical coupler – Input/output coupler
Patent
1995-08-23
1997-06-03
Dzierzynski, Paul M.
Optical waveguides
With optical coupler
Input/output coupler
385 13, 359 3, 359 34, 359570, 359575, G02B 508
Patent
active
056363044
ABSTRACT:
A method for forming a grating in a photosensitive medium such as a photosensitive optical fiber. The method comprises impinging a pair of interfering, actinic beams onto the medium, and during the impinging step, advancing the illuminated portion of the interference pattern relative to the medium. The advancement is carried out without changing the phase, or registration, of the interference pattern. According to one embodiment of the invention, a grating having a spatially dependent period is produced by varying the wavelength or the intersection angle of the actinic beams during the advancement. According to a second embodiment of the invention, a grating having a spatially dependent refractive index perturbation is produced by varying the dose of actinic radiation received by the medium during the advancement.
REFERENCES:
patent: 3909110 (1975-09-01), Marcuse
patent: 4093338 (1978-06-01), Bjorklund et al.
patent: 4725110 (1988-02-01), Glenn et al.
patent: 4807950 (1989-02-01), Glenn et al.
patent: 4953939 (1990-09-01), Epworth
patent: 5007705 (1991-04-01), Morey et al.
patent: 5237576 (1993-08-01), DiGiovanni et al.
patent: 5257273 (1993-10-01), Farries et al.
patent: 5305336 (1994-04-01), Adar et al.
patent: 5351321 (1994-09-01), Snitzer et al.
patent: 5367588 (1994-11-01), Hill et al.
patent: 5384884 (1995-01-01), Kashyap et al.
patent: 5388173 (1995-02-01), Glenn
patent: 5400422 (1995-03-01), Askins et al.
patent: 5461687 (1995-10-01), Brock
G. Meltz, et al., "Formation of Bragg Gratings in Optical Fibers by a Transverse Holographic Method", Optics Letters, vol. 14, No. 15, 1 Aug. 1991, pp. 823-825.
H. G. Park, et al., "Intermodal Coupler Using Permanently Photoinduced Grating in Two-Mode Optical Fibre", Electronics Lett. vol. 25, No. 12, 8 Jun. 1989, pp. 797-798.
F. Ouellette, "Dispersion Cancellation Using Linearly Chirped Bragg Grating Filters in Optical Waveguides", Optics Letters, vol. 12, No. 10, Oct. 1987, pp. 847-849.
K. O. Hill, et al., "Photosensitivity in Optical Fiber Waveguides: Application to Reflection Filter Fabrication," Appl. Phys. Lett; vol. 32, No. 10, 15 May 1978, pp. 647-649.
M. C. Farries et al., "Broadband Chirped Fibre Bragg Filters for Pump Rejection and Recycling in Erbium Doped Fibre Amplifiers," Electron. Lett. 28 (27 Feb. 1992) 487-489.
I. Bennion et al., "High-Reflectivity Monomode-Fibre Grating Filters," Electron. Lett. 22 (13 Mar. 1986) 341-343.
A. Katzir et al., "Chirped-grating output couplers in dielectric waveguides," Appl. Phys. Lett. 30 (Mar. 1977) 225-226.
A. Katzir et al., "Chirped Gratings in Integrated Optics," IEEE J. Quantum Electron. QE-13 (Apr. 1977) 296-304.
P. A. Morton et al., "Mode-Locked Hybrid Soliton Pulse Source with Extremely Wide Operating Frequency Range," IEEE Photon. Tech. Lett. 5 (Jan. 1993) 28-31.
Mizrahi Victor
Mollenauer Linn F.
Dzierzynski Paul M.
Finston Martin I.
Jr. John Juba
Lucent Technologies - Inc.
LandOfFree
Article comprising a spatially varying Bragg grating in an optic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Article comprising a spatially varying Bragg grating in an optic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Article comprising a spatially varying Bragg grating in an optic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-398029