Method for fabrication of in-line optical waveguide index gratin

Details Method for fabrication of in-line optical waveguide index gratin Method for fabrication of in-line optical waveguide index gratin

1997-10-02

1999-06-15

Sanghavi, Hemang

Optical waveguides

With optical coupler

Input/output coupler

385123, 359569, G02B 634

Patent

active

059129999

ABSTRACT:
A method and an apparatus for writing apodized Bragg gratings into an optical fiber. The method includes the steps of providing a photosensitive optical fiber and a writing beam. A periodic intensity distribution of period .LAMBDA. is created from the writing beam and the optical fiber is translated relative to the intensity distribution at a velocity v(t). The intensity of the writing beam is modulated as a function of time at a frequency f(t), where ##EQU1## The intensity of the writing beam is varied further to control the envelope of the refractive index profile to write apodized gratings.

REFERENCES:
patent: 5066133 (1991-11-01), Brienza
patent: 5619603 (1997-04-01), Epworth et al.
patent: 5636304 (1997-06-01), Mizrahi et al.
patent: 5708738 (1998-01-01), Perez et al.
Raoul Stubbe, Bengt Sahlgren; Simon Sandgren and Adel Asseh of the Royal Instiitue of Technology, Stockholm, Sweden; "Novel Technique for Writing Long Superstructured Fiber Bragg Gratings ", XP 002046186, PD1-1 to PD1-3 (285); Sep. 1995
"Continous, Arbitrary Profile Fibre Bragg Grating Fabrication Technique", M. J. Cole et al., presented to Optical Society of America, Oct. 23,1997.
"1m long continously-written bfibre Bragg gratings for combined second-and third-order dispersion compensation", M. Durkin et al., Electronics Letters, 23 Oct. 1997, vol. 33, No. 22, pp. 1891-1893.
"Novel technique for writing long superstructured fiber Bragg gratings", R. Stubbe et al., Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamental and Applications, 1995 Technical Digest Series, vol. 22, pp. 285-287
"Moving fibre/phase mask scanning beam technique for enhanced flexibility in producing fibre gratings with uniform phase mask", M. J. Cole et al., Electronics Letters, 17 Aug. 1995, vol. 31, No. 17 pp. 1488-1490.
"A Writing Technique for Long Fiber Bragg Gratings with Complex Reflectivity Profiles", A Asseh et al., IEEE , Journal of Lightwave Technology, vol. 15, No. 8, Aug. '97, pp. 1419-1423.
"Fiber gratings for dispersion compensation", R. I. Laming et al., OFC '97 Technical Digest, Thursday Morning, pp. 234-235.
"Complex grating structures with uniform phase masks based on the moving fiberscanning beam technique", W. H. Loh et al., Optics Letters, 15 Oct. '95, vol. 20, No. 20, pp. 2051-2053.
"Broadband dispersion-compensating chirped fibre Bragg gratings in a 10Gbit/s NRZ 110km non-dispersion-shifted fibre link operating at 1.55.mu.m" , M. J. Cole et al., Electronics Letters,2 Jan. '97, vol. 33, No. 1, pp. 70-71.
"Chirped in-fiber Bragg gratings for compensation of optical-fiber dispersion", K. O. Hill et al., Optics Letters, 1 Sept. '94, vol. 19, No. 17, pp. 1313-1316.
"Fiber Bragg Grating Fabrication for Dispersion Slope Compensation", J.A.R. Williams, et al., IEEE Photonics Technology Letters, Sept. 96, vol. 8, No. 9, pp. 1187-1189.
"1.3, long super-step-chirped fibre Bragg grating with a continuous delay of 13.5ns and bandwidth 10nm for broadband dispersion compensation", R. Kashyap et al., Electronics Letters, 12 Sept. 96, vol. 32, No. 19, pp. 1807-1809.
"Experimental reduction of chromatic dispersion effects in lightwave microwave/millemetre-wave transmissions using tapered linearly chirped fibre gratings", J. Marti et al., Electronics Letters, 19 Jun 97, vol. 33, No. 13, pp. 1170-1171.
"Fabrication and characterisation of long, narrowband fibre gratings by phase mask scanning", H. N. Rourke et al., Electronics Letters, 4 Aug. 94, vol. 30, No. 16, pp. 1341-1342.
"Novel writing technique of long and highly reflective in-fibre gratings", J. Martin et al., Electronic Letters, 12 May 94, vol.30, No. 10, pp. 811-812.

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