Highly-compact, temperature-insensitive phase-shifted and multiple phase-shifted long-period fiber gratings by use of a CO2laser

Y. Zhu; P. Shum; X. Chen; C. H. Tan; H. W. Bay; Chao Lu

doi:10.1117/12.590742

Highly-compact, temperature-insensitive phase-shifted and multiple phase-shifted long-period fiber gratings by use of a CO₂laser

Y. Zhu, P. Shum, X. Chen, C. H. Tan, H. W. Bay, Chao Lu

Research output: Journal article publication › Conference article › Academic research › peer-review

Abstract

We demonstrate the first fabrication of highly-compact and temperature-insensitive phase-shifted and multiple phase-shifted long-period gratings using the focused pulses of CO2laser with point-by-point technique. By introducing the 3π/2, π, or π/2 phase shifts in the different location of the gratings with 480 μm of a period-length and total number about 16-21 periods, the symmetrical and asymmetrical pandpass filters based on those gratings can be obtained. The temperature sensitivity of formed g ratings is about 8.8 pm/0C at a temperature range of 230C - 1900C. Such fiber grating component could be used as an all-fiber oscillator in the laser cavity. Long-period gratings with different phase shifts are also investigated with various notches of resonance attenuations. All gratings fabricated are compactness to be packaged into the fiber-optic based devices.

Original language	English
Article number	155
Pages (from-to)	816-821
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5622
Issue number	PART 2
DOIs	https://doi.org/10.1117/12.590742
Publication status	Published - 1 Dec 2004
Externally published	Yes
Event	RIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting - Porlamar, Venezuela, Bolivarian Republic of Duration: 3 Oct 2004 → 8 Oct 2004

Keywords

CO laser 2
Fiber Bragg grating
Long-period gratings
Phase-shifted
Single-mode fiber

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

More information

10.1117/12.590742

Cite this

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title = "Highly-compact, temperature-insensitive phase-shifted and multiple phase-shifted long-period fiber gratings by use of a CO2laser",

abstract = "We demonstrate the first fabrication of highly-compact and temperature-insensitive phase-shifted and multiple phase-shifted long-period gratings using the focused pulses of CO2laser with point-by-point technique. By introducing the 3π/2, π, or π/2 phase shifts in the different location of the gratings with 480 μm of a period-length and total number about 16-21 periods, the symmetrical and asymmetrical pandpass filters based on those gratings can be obtained. The temperature sensitivity of formed g ratings is about 8.8 pm/0C at a temperature range of 230C - 1900C. Such fiber grating component could be used as an all-fiber oscillator in the laser cavity. Long-period gratings with different phase shifts are also investigated with various notches of resonance attenuations. All gratings fabricated are compactness to be packaged into the fiber-optic based devices.",

keywords = "CO laser 2, Fiber Bragg grating, Long-period gratings, Phase-shifted, Single-mode fiber",

author = "Y. Zhu and P. Shum and X. Chen and Tan, {C. H.} and Bay, {H. W.} and Chao Lu",

year = "2004",

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note = "RIAO/OPTILAS 2004: 5th Iberoamerican Meeting on Optics, and 8th Latin American Meeting on Optics, Lasers, and their Applications; ICO Regional Meeting ; Conference date: 03-10-2004 Through 08-10-2004",

}

Highly-compact, temperature-insensitive phase-shifted and multiple phase-shifted long-period fiber gratings by use of a CO₂laser. / Zhu, Y.; Shum, P.; Chen, X. et al.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5622, No. PART 2, 155, 01.12.2004, p. 816-821.

Research output: Journal article publication › Conference article › Academic research › peer-review

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AU - Zhu, Y.

AU - Shum, P.

AU - Chen, X.

AU - Tan, C. H.

AU - Bay, H. W.

AU - Lu, Chao

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AB - We demonstrate the first fabrication of highly-compact and temperature-insensitive phase-shifted and multiple phase-shifted long-period gratings using the focused pulses of CO2laser with point-by-point technique. By introducing the 3π/2, π, or π/2 phase shifts in the different location of the gratings with 480 μm of a period-length and total number about 16-21 periods, the symmetrical and asymmetrical pandpass filters based on those gratings can be obtained. The temperature sensitivity of formed g ratings is about 8.8 pm/0C at a temperature range of 230C - 1900C. Such fiber grating component could be used as an all-fiber oscillator in the laser cavity. Long-period gratings with different phase shifts are also investigated with various notches of resonance attenuations. All gratings fabricated are compactness to be packaged into the fiber-optic based devices.

KW - CO laser 2

KW - Fiber Bragg grating

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