Optical Delay Amplified by Chirped Fiber Bragg Gratings

Byeong-Ha Lee; Gopinath Mudhana

Abstract

We report a novel optical delay line that can be implemented using only optical fiber and fiber devices without the need for any bulk-optic devices such as lens, prism, and moving mirror. The dispersive property of a chirped fiber Bragg grating (CFBG) is exploited to get the delay. The proposed delay line constitutes two identical CFBGs cascaded in the reverse order with one of them being strained. Analysis reveals that the small displacement or the strain applied on the CFBG is effectively amplified in the delay line by the ratio of the minimum resonant wavelength and the reflection bandwidth of the CFBG. The dispersion properties of the CFBG with and without the strain are analyzed in detail. The theoretical performance of the proposed delay line is also discussed. Applications of the proposed delay line are expected in the field of high-speed optical coherence tomograpy.

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H. P. Weber, "Method for pulsewidth measurement of ultrashort light pulses generated by phase-locked lasers using nonlinear optics," J. Appl. Phys., vol. 38, pp. 2231-2234, 1967
[Crossref]
D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, "Optical coherence tomography," Science, vol. 254, pp. 1178-1181, 1991
[Crossref]
B. H. Lee, T.-J. Eom, E. Choi, Y.-J. Kim, and C. Lee, "All fiber delay line for OCT based on fiber gratings," in Asian Symposium on Biomedical Optics and Photomedicine 2002, TB2-1, pp. 140-141, 2002
J. Ballif, R. Gianotti, Ph. Chavanne, R. Walti, and R. P. Salathe, "Rapid and scalable scans at 21m/s in optical low-coherence reftectometry," Opt. Lett., vol. 22, no. 11, pp. 757-759, 1997
[Crossref]
A. M. Rollins, M. D. Kulkarni, S. Yazdanfar, R. U.-arunyawee, and J. A. Izatt, "In vivo video rate optical coherence tomography," Opt. Express, vol. 3, no.6, pp. 219-229, 1998
[Crossref]
G. J. Tearney, B. E. Bouma, S. A. Boppart, B. Gol-ubovic, E. A. Swanson, and J. G. Fusimoto, "Rapid acquisition of in vivo biological images by use of optical coherence tomography," Opt. Lett., vol. 21, no. 17, pp. 1408-1410, 1996
[Crossref]
T. Erdogan, "Fiber grating spectra," J. Light. Wave Technol., vol. 15, no. 8, pp. 1277-1294, 1997
[Crossref]
K. C. Byron, K. Sugden, T. Bircheno, and 1. Bennion, "Fabrication of chirped Bragg gratings in photosensitive fibre," Electron. Lett., vol. 29, no. 18, pp. 1659-1660, 1993
[Crossref]
R. Kashyap and M. L. Rocha, "On the group delay characteristics of chirped fibre Bragg gratings," Optics Communications, vol. 153, no. 6, pp. 19-22, 1998
[Crossref]
W. W. Morey, J. R. Dunphy, and G. Meltz, "Multi-plexing fiber Bragg grating sensors," Distributed and Multiplexed Fiber Optic Sensors, Proc. SPIE., vol. 1586, pp. 216-224, 1991
[Crossref]

2002 (1)

B. H. Lee, T.-J. Eom, E. Choi, Y.-J. Kim, and C. Lee, "All fiber delay line for OCT based on fiber gratings," in Asian Symposium on Biomedical Optics and Photomedicine 2002, TB2-1, pp. 140-141, 2002

1998 (2)

A. M. Rollins, M. D. Kulkarni, S. Yazdanfar, R. U.-arunyawee, and J. A. Izatt, "In vivo video rate optical coherence tomography," Opt. Express, vol. 3, no.6, pp. 219-229, 1998
[Crossref]

R. Kashyap and M. L. Rocha, "On the group delay characteristics of chirped fibre Bragg gratings," Optics Communications, vol. 153, no. 6, pp. 19-22, 1998
[Crossref]

1997 (2)

T. Erdogan, "Fiber grating spectra," J. Light. Wave Technol., vol. 15, no. 8, pp. 1277-1294, 1997
[Crossref]

J. Ballif, R. Gianotti, Ph. Chavanne, R. Walti, and R. P. Salathe, "Rapid and scalable scans at 21m/s in optical low-coherence reftectometry," Opt. Lett., vol. 22, no. 11, pp. 757-759, 1997
[Crossref]

1996 (1)

G. J. Tearney, B. E. Bouma, S. A. Boppart, B. Gol-ubovic, E. A. Swanson, and J. G. Fusimoto, "Rapid acquisition of in vivo biological images by use of optical coherence tomography," Opt. Lett., vol. 21, no. 17, pp. 1408-1410, 1996
[Crossref]

1993 (1)

K. C. Byron, K. Sugden, T. Bircheno, and 1. Bennion, "Fabrication of chirped Bragg gratings in photosensitive fibre," Electron. Lett., vol. 29, no. 18, pp. 1659-1660, 1993
[Crossref]

1992 (1)

W. W. Morey, J. R. Dunphy, and G. Meltz, "Multi-plexing fiber Bragg grating sensors," Distributed and Multiplexed Fiber Optic Sensors, Proc. SPIE., vol. 1586, pp. 216-224, 1991
[Crossref]

1991 (1)

D. Huang, E. A. Swanson, C. P. Lin, J. S. Schuman, W. G. Stinson, W. Chang, M. R. Hee, T. Flotte, K. Gregory, C. A. Puliafito, and J. G. Fujimoto, "Optical coherence tomography," Science, vol. 254, pp. 1178-1181, 1991
[Crossref]

1967 (1)

H. P. Weber, "Method for pulsewidth measurement of ultrashort light pulses generated by phase-locked lasers using nonlinear optics," J. Appl. Phys., vol. 38, pp. 2231-2234, 1967
[Crossref]

Asian Symposium on Biomedical Optics and Photomedicine 2002, TB2-1 (1)