Abstract

We demonstrate an automatic tunable transversal notch filter based on uniform fiber Bragg gratings and a broadband optical source. High tunability can be performed by stretching the fiber with the gratings written in series. Also, high sidelobe supression can be achieved by introducing tunable attenuators in a parallel configuration of the gratings.

© 2002 Optical Society of America

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  1. S. Osawa, N. Wada, K. Kitayama, W. Chujo, �??Arbitrarily-shaped optical pulse train synthesis using weight/phase-programmable 32-tapped delay line waveguide filter,�?? Electron. Lett. 37, 1356-1357 (2001).
    [CrossRef]
  2. D. B. Hunter, R. A. Minasian, P A. Krug, �??Tunable optical transversal filter based on chirped gratings,�?? Electron. Lett. 31, 2205-2207 (1995).
    [CrossRef]
  3. J. Capmany, D. Pastor, B. Ortega, �??New and flexible fiber-optic delay-line filters using chirped Bragg gratings and laser arrays,�?? IEEE Trans. Microwave Theory Tech. 47, 1321-1326 (1999).
  4. W. Zhang, J. A. R. Williams, L. A. Everall, I. Bennion, �??Fibre optic radio frequency notch filter with linear and continuous tuning by using a chirped fibre grating,�?? Electron. Lett. 34, 1770-1772 (1998).
    [CrossRef]
  5. G. Yu, W. Zhang, J. A. R. Williams, �??High-performance microwave transversal filter using fiber Bragg grating arrays,�?? IEEE Photonics Technol. Lett. 12, 1183-1185 (2000).
    [CrossRef]
  6. J. Capmany, D. Pastor, B. Ortega, �??Fibre optic microwave and millimetre-wave filter with high density sampling and very high sidelobe supression using subnanometre optical spectrum slicing,�?? Electron. Lett. 35, 494-496 (1999).
    [CrossRef]
  7. D. Pastor, B. Ortega, J. Capmany, S. Sales, A. Martínez, P. Muñoz, �??Flexible and tunable microwave filters based on arrayed waveguide gratings,�?? accepted to Microwave Photonics 2002, MWP�??02. Japan, November 2002.
  8. D. Pastor, J. Capmany, B. Ortega, �??Broad-band tunable microwave transversal notch filter based on tunable uniform fiber Bragg gratings as slicing filters,�?? IEEE Photonics Technol. Lett. 13, 726 �??728 (2001).
    [CrossRef]
  9. W. Zhang, J. A. R. Williams, I. Bennion, �??Polarization sythesized optical transversal filter employing high birefringence fiber gratings,�?? IEEE Photonics Technol. Lett. 13, 523-525 (2001).
    [CrossRef]
  10. J. Mora, B. Ortega, M. V. Andres, J. Capmany, D. Pastor, J. L. Cruz, S. Sales, �??Dynamic optical transversal filters based on a tunable dispersion fiber Bragg grating,�?? in International Topical Meeting on Microwave Photonics 2001, MWP '01, 203 �??206 (2001).

Electron. Lett. (4)

S. Osawa, N. Wada, K. Kitayama, W. Chujo, �??Arbitrarily-shaped optical pulse train synthesis using weight/phase-programmable 32-tapped delay line waveguide filter,�?? Electron. Lett. 37, 1356-1357 (2001).
[CrossRef]

D. B. Hunter, R. A. Minasian, P A. Krug, �??Tunable optical transversal filter based on chirped gratings,�?? Electron. Lett. 31, 2205-2207 (1995).
[CrossRef]

W. Zhang, J. A. R. Williams, L. A. Everall, I. Bennion, �??Fibre optic radio frequency notch filter with linear and continuous tuning by using a chirped fibre grating,�?? Electron. Lett. 34, 1770-1772 (1998).
[CrossRef]

J. Capmany, D. Pastor, B. Ortega, �??Fibre optic microwave and millimetre-wave filter with high density sampling and very high sidelobe supression using subnanometre optical spectrum slicing,�?? Electron. Lett. 35, 494-496 (1999).
[CrossRef]

IEEE Photonics Technol. Lett. (3)

D. Pastor, J. Capmany, B. Ortega, �??Broad-band tunable microwave transversal notch filter based on tunable uniform fiber Bragg gratings as slicing filters,�?? IEEE Photonics Technol. Lett. 13, 726 �??728 (2001).
[CrossRef]

W. Zhang, J. A. R. Williams, I. Bennion, �??Polarization sythesized optical transversal filter employing high birefringence fiber gratings,�?? IEEE Photonics Technol. Lett. 13, 523-525 (2001).
[CrossRef]

G. Yu, W. Zhang, J. A. R. Williams, �??High-performance microwave transversal filter using fiber Bragg grating arrays,�?? IEEE Photonics Technol. Lett. 12, 1183-1185 (2000).
[CrossRef]

IEEE Trans. Microwave Theory Tech. (1)

J. Capmany, D. Pastor, B. Ortega, �??New and flexible fiber-optic delay-line filters using chirped Bragg gratings and laser arrays,�?? IEEE Trans. Microwave Theory Tech. 47, 1321-1326 (1999).

Other (2)

J. Mora, B. Ortega, M. V. Andres, J. Capmany, D. Pastor, J. L. Cruz, S. Sales, �??Dynamic optical transversal filters based on a tunable dispersion fiber Bragg grating,�?? in International Topical Meeting on Microwave Photonics 2001, MWP '01, 203 �??206 (2001).

D. Pastor, B. Ortega, J. Capmany, S. Sales, A. Martínez, P. Muñoz, �??Flexible and tunable microwave filters based on arrayed waveguide gratings,�?? accepted to Microwave Photonics 2002, MWP�??02. Japan, November 2002.

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