Abstract

We propose a tunable flat-top bandpass filter to pass light in a customized wavelength band by using long-period fiber gratings (LPFG) structure. The LPFG structure is composed of a core mode blocker in between two LPFGs. The bandpass spectrum of the proposed structure is obtained in overlapped wavelength band of two LPFGs operating on the same modes. To analyze the properties, we introduce a mathematical matrix model for the structure. We theoretically demonstrate flexibility of the flat-top bandpass filter with various bandwidths.

© 2011 Optical Society of Korea

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  1. A. Othonos and K. Kalli, Fiber Bragg Gratings - Fundamentals and Applications in Telecommunications and Sensing (Artech House, Boston, USA, 1999).
  2. S. Kim, G. H. Kim, K. Hwang, S. D. Lim, K. Lee, S. H. Kim, S. B. Lee, and J. Jeong, "Investigation of an arcinduced long period fiber grating inscribed in a photonic crystal fiber with two large air holes," J. Opt. Soc. Korea 13, 428-433 (2009).
    [CrossRef]
  3. Y. G. Han, S. H. Kim, S. B. Lee, U. C. Paek, and Y. Chung, "Development of core mode blocker with <TEX>$H_2-loaded$</TEX> Ge-B codoped fibres," Electron. Lett. 39, 1107-1108 (2003).
    [CrossRef]
  4. S. D. Lim, J. G. Kim, K. Lee, S. B. Lee, and B. Y. Kim, "Fabrication of a highly efficient core-mode blocker using a femtosecond laser ablation technique," Opt. Express 17, 18449-18454 (2009).
    [CrossRef]
  5. S. Choi, T. J. Eom, J. W. Yu, B. H. Lee, and K. Oh, "Novel all-fiber bandpass filter based on hollow optical fiber," IEEE Photon. Technol. Lett. 14, 1701-1703 (2002).
    [CrossRef]
  6. S. Choi, T. J. Eom, J. W. Yu, and B. H. Lee, "Broad-band tunable all-fiber bandpass filter based on hollow optical fiber and long-period grating pair," IEEE Photon. Technol. Lett. 17, 115-117 (2005).
    [CrossRef]
  7. H. Sakata, Y. Takata, and S. Suzuki, "Single-channel bandpass filter based on vernier-aligned long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1661-1663 (2007).
    [CrossRef]
  8. D. S. Starodubov, V. Grubsky, and J. Feinberg, "All-fiber bandpass filter with adjustable transmission using cladding-mode coupling," IEEE Photon. Technol. Lett. 10, 1590-1592 (1998).
    [CrossRef]
  9. Y. Han, S. H. Kim, and S. B. Lee, "Flexibly tunable multichannel filter and bandpass filter based on long-period fiber gratings," Opt. Express 12, 1902-1907 (2004).
    [CrossRef]
  10. J. Bae, J. Chun, and S. B. Lee, "Synthesis of long-period fiber gratings with the inverted erbium gain spectrum using the multiport lattice filter model," J. Ligthwave Technol. 22, 1976-1986 (2004).
    [CrossRef]
  11. H. Kim, J. Bae, and J. Chun, "Synthesis of flat-top bandpass filters using two-band rejection long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1466-1468 (2007).
    [CrossRef]
  12. H. Kim, J. Bae, J. W. Lee, J. Chun, and S. B. Lee, "Analysis of concatenated longperiod fiber gratings having phase-shifted and cascaded effects," Jpn. J. Appl. Phys. Part 1 42, 5098-5101 (2003).
    [CrossRef]
  13. M. Yi, Y. Kim, D. Yee, and J. Ahn, "Terahertz frequency spreading filter via one-dimensional dielectric multilayer structures," J. Opt. Soc. Korea 13, 398-402 (2009).
    [CrossRef]
  14. G. Song and S. Shin, "Design of corrugated waveguide filters by the Gel"fand-Levitan-Marchenko inverse-scattering method," J. Opt. Soc. Am. A 2, 1905-1915 (1985).
    [CrossRef]
  15. E. Peral, J. Capmany, and J. Marti, "Iterative solution to the Gel"fand-Levitan-Marchenko coupled equations and application to synthesis of fiber gratings," J. Quantum Electron. 32, 2078-2084 (1996).
    [CrossRef]

2009

S. Kim, G. H. Kim, K. Hwang, S. D. Lim, K. Lee, S. H. Kim, S. B. Lee, and J. Jeong, "Investigation of an arcinduced long period fiber grating inscribed in a photonic crystal fiber with two large air holes," J. Opt. Soc. Korea 13, 428-433 (2009).
[CrossRef]

S. D. Lim, J. G. Kim, K. Lee, S. B. Lee, and B. Y. Kim, "Fabrication of a highly efficient core-mode blocker using a femtosecond laser ablation technique," Opt. Express 17, 18449-18454 (2009).
[CrossRef]

M. Yi, Y. Kim, D. Yee, and J. Ahn, "Terahertz frequency spreading filter via one-dimensional dielectric multilayer structures," J. Opt. Soc. Korea 13, 398-402 (2009).
[CrossRef]

2007

H. Kim, J. Bae, and J. Chun, "Synthesis of flat-top bandpass filters using two-band rejection long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1466-1468 (2007).
[CrossRef]

H. Sakata, Y. Takata, and S. Suzuki, "Single-channel bandpass filter based on vernier-aligned long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1661-1663 (2007).
[CrossRef]

2005

S. Choi, T. J. Eom, J. W. Yu, and B. H. Lee, "Broad-band tunable all-fiber bandpass filter based on hollow optical fiber and long-period grating pair," IEEE Photon. Technol. Lett. 17, 115-117 (2005).
[CrossRef]

2004

Y. Han, S. H. Kim, and S. B. Lee, "Flexibly tunable multichannel filter and bandpass filter based on long-period fiber gratings," Opt. Express 12, 1902-1907 (2004).
[CrossRef]

J. Bae, J. Chun, and S. B. Lee, "Synthesis of long-period fiber gratings with the inverted erbium gain spectrum using the multiport lattice filter model," J. Ligthwave Technol. 22, 1976-1986 (2004).
[CrossRef]

2003

H. Kim, J. Bae, J. W. Lee, J. Chun, and S. B. Lee, "Analysis of concatenated longperiod fiber gratings having phase-shifted and cascaded effects," Jpn. J. Appl. Phys. Part 1 42, 5098-5101 (2003).
[CrossRef]

Y. G. Han, S. H. Kim, S. B. Lee, U. C. Paek, and Y. Chung, "Development of core mode blocker with <TEX>$H_2-loaded$</TEX> Ge-B codoped fibres," Electron. Lett. 39, 1107-1108 (2003).
[CrossRef]

2002

S. Choi, T. J. Eom, J. W. Yu, B. H. Lee, and K. Oh, "Novel all-fiber bandpass filter based on hollow optical fiber," IEEE Photon. Technol. Lett. 14, 1701-1703 (2002).
[CrossRef]

1999

A. Othonos and K. Kalli, Fiber Bragg Gratings - Fundamentals and Applications in Telecommunications and Sensing (Artech House, Boston, USA, 1999).

1998

D. S. Starodubov, V. Grubsky, and J. Feinberg, "All-fiber bandpass filter with adjustable transmission using cladding-mode coupling," IEEE Photon. Technol. Lett. 10, 1590-1592 (1998).
[CrossRef]

1996

E. Peral, J. Capmany, and J. Marti, "Iterative solution to the Gel"fand-Levitan-Marchenko coupled equations and application to synthesis of fiber gratings," J. Quantum Electron. 32, 2078-2084 (1996).
[CrossRef]

1985

Electron. Lett.

Y. G. Han, S. H. Kim, S. B. Lee, U. C. Paek, and Y. Chung, "Development of core mode blocker with <TEX>$H_2-loaded$</TEX> Ge-B codoped fibres," Electron. Lett. 39, 1107-1108 (2003).
[CrossRef]

IEEE Photon. Technol. Lett.

S. Choi, T. J. Eom, J. W. Yu, B. H. Lee, and K. Oh, "Novel all-fiber bandpass filter based on hollow optical fiber," IEEE Photon. Technol. Lett. 14, 1701-1703 (2002).
[CrossRef]

S. Choi, T. J. Eom, J. W. Yu, and B. H. Lee, "Broad-band tunable all-fiber bandpass filter based on hollow optical fiber and long-period grating pair," IEEE Photon. Technol. Lett. 17, 115-117 (2005).
[CrossRef]

H. Sakata, Y. Takata, and S. Suzuki, "Single-channel bandpass filter based on vernier-aligned long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1661-1663 (2007).
[CrossRef]

D. S. Starodubov, V. Grubsky, and J. Feinberg, "All-fiber bandpass filter with adjustable transmission using cladding-mode coupling," IEEE Photon. Technol. Lett. 10, 1590-1592 (1998).
[CrossRef]

H. Kim, J. Bae, and J. Chun, "Synthesis of flat-top bandpass filters using two-band rejection long-period fiber gratings," IEEE Photon. Technol. Lett. 19, 1466-1468 (2007).
[CrossRef]

J. Ligthwave Technol.

J. Bae, J. Chun, and S. B. Lee, "Synthesis of long-period fiber gratings with the inverted erbium gain spectrum using the multiport lattice filter model," J. Ligthwave Technol. 22, 1976-1986 (2004).
[CrossRef]

J. Opt. Soc. Am. A

J. Quantum Electron.

E. Peral, J. Capmany, and J. Marti, "Iterative solution to the Gel"fand-Levitan-Marchenko coupled equations and application to synthesis of fiber gratings," J. Quantum Electron. 32, 2078-2084 (1996).
[CrossRef]

Journal of the Optical Society of Korea

M. Yi, Y. Kim, D. Yee, and J. Ahn, "Terahertz frequency spreading filter via one-dimensional dielectric multilayer structures," J. Opt. Soc. Korea 13, 398-402 (2009).
[CrossRef]

S. Kim, G. H. Kim, K. Hwang, S. D. Lim, K. Lee, S. H. Kim, S. B. Lee, and J. Jeong, "Investigation of an arcinduced long period fiber grating inscribed in a photonic crystal fiber with two large air holes," J. Opt. Soc. Korea 13, 428-433 (2009).
[CrossRef]

Jpn. J. Appl. Phys.

H. Kim, J. Bae, J. W. Lee, J. Chun, and S. B. Lee, "Analysis of concatenated longperiod fiber gratings having phase-shifted and cascaded effects," Jpn. J. Appl. Phys. Part 1 42, 5098-5101 (2003).
[CrossRef]

Opt. Express

Other

A. Othonos and K. Kalli, Fiber Bragg Gratings - Fundamentals and Applications in Telecommunications and Sensing (Artech House, Boston, USA, 1999).

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