Fabrication and characterization of bandpass filters based on concatenated chirped fiber gratings

K. Sugden; L. Zhang; J. A.R. Williams; R. W. Fallon; L. A. Everall; K. E. Chisholm; I. Bennion

doi:10.1109/50.618374

Fabrication and characterization of bandpass filters based on concatenated chirped fiber gratings

K. Sugden
, L. Zhang
, J. A.R. Williams
, R. W. Fallon
, L. A. Everall
, K. E. Chisholm
, I. Bennion

Aston University

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Practical, low-loss (<2 dB), fiber Bragg grating single-passband transmission filters have been realized with >30 dB out-of-band rejection over ∼25 nm spectral widths. The approach adopted is based on the concatenation of two or more tailored broadband chirped gratings fabricated with low short-wavelength loss to maximize the rejection and stopband width in a filter with ∼1 nm passband. The effect of thermal aging for similar complex structures is considered in the context of three different fiber types: standard telecommunication, high germania(Ge)-doped and boron/germania(B/Ge)-codoped. It is shown that while hydrogenated B/Ge-codoped fiber exhibits excellent photosensitivity, the resulting decrease in guiding strength and thermal stability may make germania-doped fiber the more attractive choice.

Original language	English
Pages (from-to)	1424-1432
Number of pages	9
Journal	Journal of Lightwave Technology
Volume	15
Issue number	8
DOIs	https://doi.org/10.1109/50.618374
Publication status	Published - 1 Aug 1997
Externally published	Yes

Funding

Manuscript received November 18, 1996; revised May 5, 1997. This work was supported by the EU under the ACTS project PHOTOS, and EPSRC (UK) under the LINK project MAST. The authors are with the Department of Electronic Engineering and Applied Physics, Aston University, Aston Triangle, Birmingham, B4 7ET, UK. Publisher Item Identifier S 0733-8724(97)05929-X.

Keywords

Bandpass filters
Broadband
Chirped gratings
Fiber Bragg gratings
Thermal stability

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/50.618374

Cite this

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abstract = "Practical, low-loss (<2 dB), fiber Bragg grating single-passband transmission filters have been realized with >30 dB out-of-band rejection over ∼25 nm spectral widths. The approach adopted is based on the concatenation of two or more tailored broadband chirped gratings fabricated with low short-wavelength loss to maximize the rejection and stopband width in a filter with ∼1 nm passband. The effect of thermal aging for similar complex structures is considered in the context of three different fiber types: standard telecommunication, high germania(Ge)-doped and boron/germania(B/Ge)-codoped. It is shown that while hydrogenated B/Ge-codoped fiber exhibits excellent photosensitivity, the resulting decrease in guiding strength and thermal stability may make germania-doped fiber the more attractive choice.",

keywords = "Bandpass filters, Broadband, Chirped gratings, Fiber Bragg gratings, Thermal stability",

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AU - Sugden, K.

AU - Zhang, L.

AU - Williams, J. A.R.

AU - Fallon, R. W.

AU - Everall, L. A.

AU - Chisholm, K. E.

AU - Bennion, I.

PY - 1997/8/1

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N2 - Practical, low-loss (<2 dB), fiber Bragg grating single-passband transmission filters have been realized with >30 dB out-of-band rejection over ∼25 nm spectral widths. The approach adopted is based on the concatenation of two or more tailored broadband chirped gratings fabricated with low short-wavelength loss to maximize the rejection and stopband width in a filter with ∼1 nm passband. The effect of thermal aging for similar complex structures is considered in the context of three different fiber types: standard telecommunication, high germania(Ge)-doped and boron/germania(B/Ge)-codoped. It is shown that while hydrogenated B/Ge-codoped fiber exhibits excellent photosensitivity, the resulting decrease in guiding strength and thermal stability may make germania-doped fiber the more attractive choice.

AB - Practical, low-loss (<2 dB), fiber Bragg grating single-passband transmission filters have been realized with >30 dB out-of-band rejection over ∼25 nm spectral widths. The approach adopted is based on the concatenation of two or more tailored broadband chirped gratings fabricated with low short-wavelength loss to maximize the rejection and stopband width in a filter with ∼1 nm passband. The effect of thermal aging for similar complex structures is considered in the context of three different fiber types: standard telecommunication, high germania(Ge)-doped and boron/germania(B/Ge)-codoped. It is shown that while hydrogenated B/Ge-codoped fiber exhibits excellent photosensitivity, the resulting decrease in guiding strength and thermal stability may make germania-doped fiber the more attractive choice.

KW - Bandpass filters

KW - Broadband

KW - Chirped gratings

KW - Fiber Bragg gratings

KW - Thermal stability

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Fabrication and characterization of bandpass filters based on concatenated chirped fiber gratings

Abstract

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Keywords

ASJC Scopus subject areas

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