Abstract

We propose a new method for the development of a tunable optical bandpass filter (TOBF) based on a linearly chirped fiber Bragg grating (LCFBG). A NiCr wire heater is used to heat the LCFBG at a small point to introduce a narrow passband within the stop band of the LCFBG. The central wavelength of the passband is tuned by scanning the wire heater along the LCFBG. As an example demonstrating the effectiveness of the proposed method, we demonstrate a TOBF with a very small 3-dB bandwidth of 7 pm, a tuning range of 16.4 nm, and a rejection ratio of more than 25 dB. Compared with previously reported tunable-fiber-based bandpass filters, this method provides the advantages of a large tuning range, continuous tunability, a switchable passband, a simple tuning mechanism, low cost, and narrow bandwidth.

© 2004 Optical Society of America

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  1. R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
    [CrossRef]
  2. J. Canning and M. G. Sceats, Electron. Lett. 30, 1344 (1994).
    [CrossRef]
  3. M. Janos and J. Canning, Electron. Lett. 31, 1007 (1995).
    [CrossRef]
  4. C. J. S. de Matos, P. Torres, L. C. G. Valente, W. Margulis, and R. Stubbe, J. Lightwave Technol. 19, 1206 (2001).
    [CrossRef]
  5. M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
    [CrossRef]
  6. A. Othonos and K. Kalli, Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, Norwood, Mass., 1999).
  7. S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
    [CrossRef]
  8. S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

2001 (1)

1996 (1)

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

1995 (2)

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

M. Janos and J. Canning, Electron. Lett. 31, 1007 (1995).
[CrossRef]

1994 (2)

R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
[CrossRef]

J. Canning and M. G. Sceats, Electron. Lett. 30, 1344 (1994).
[CrossRef]

Alavie, A. T.

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

Armes, D.

R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
[CrossRef]

Asseh, A.

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Canning, J.

M. Janos and J. Canning, Electron. Lett. 31, 1007 (1995).
[CrossRef]

J. Canning and M. G. Sceats, Electron. Lett. 30, 1344 (1994).
[CrossRef]

de Matos, C. J. S.

Huang, J. X.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Janos, M.

M. Janos and J. Canning, Electron. Lett. 31, 1007 (1995).
[CrossRef]

Kalli, K.

A. Othonos and K. Kalli, Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, Norwood, Mass., 1999).

Kashyap, R.

R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
[CrossRef]

Laurell, F.

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Li, S. Y.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Lidgard, A.

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Maaskant, R.

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

Margulis, W.

C. J. S. de Matos, P. Torres, L. C. G. Valente, W. Margulis, and R. Stubbe, J. Lightwave Technol. 19, 1206 (2001).
[CrossRef]

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

McKee, P. F.

R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
[CrossRef]

Ngo, N. Q.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Ohn, M. M.

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

Othonos, A.

A. Othonos and K. Kalli, Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, Norwood, Mass., 1999).

Sahlgren, B.

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Sandgren, S.

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Sceats, M. G.

J. Canning and M. G. Sceats, Electron. Lett. 30, 1344 (1994).
[CrossRef]

Shum, P.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Stubbe, R.

C. J. S. de Matos, P. Torres, L. C. G. Valente, W. Margulis, and R. Stubbe, J. Lightwave Technol. 19, 1206 (2001).
[CrossRef]

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

Tjin, S. C.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Torres, P.

Valente, L. C. G.

Xu, M. G.

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

Zhang, J.

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

Electron. Lett. (5)

R. Kashyap, P. F. McKee, and D. Armes, Electron. Lett. 30, 1977 (1994).
[CrossRef]

J. Canning and M. G. Sceats, Electron. Lett. 30, 1344 (1994).
[CrossRef]

M. Janos and J. Canning, Electron. Lett. 31, 1007 (1995).
[CrossRef]

M. G. Xu, A. T. Alavie, R. Maaskant, and M. M. Ohn, Electron. Lett. 32, 1918 (1996).
[CrossRef]

S. Sandgren, B. Sahlgren, A. Asseh, W. Margulis, F. Laurell, R. Stubbe, and A. Lidgard, Electron. Lett. 31, 665 (1995).
[CrossRef]

J. Lightwave Technol. (1)

Other (2)

S. Y. Li, N. Q. Ngo, S. C. Tjin, P. Shum, J. Zhang, and J. X. Huang, presented at the Conference on the Optical Internet/Australian Conference on Optical Fiber Technology 2003, Melbourne, Australia, July 13–16, 2003.

A. Othonos and K. Kalli, Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing (Artech House, Norwood, Mass., 1999).

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Figures (5)

Fig. 1
Fig. 1

Simulation results of (a) the reflection spectrum and (b) the transmission spectrum of a 6-cm-long LCFBG with a π phase shift at P1=1 cm, P2=2 cm, P3=3 cm, P4=4 cm, and P5=5 cm positions.

Fig. 2
Fig. 2

Schematic diagram of the proposed TOBF.

Fig. 3
Fig. 3

Detailed spectra of the bandpass filter without (black curve), and with (gray curve) a heat sink.

Fig. 4
Fig. 4

Passband wavelength tuning from 1539.25 to 1555.65 nm.

Fig. 5
Fig. 5

Wavelength variation with a change in the heating position.

Equations (1)

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ϕ=2πLλβΔT,

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