Structural long period gratings made by drilling micro-holes in photonic crystal fibers with a femtosecond infrared laser

Shujing Liu; Long Jin; Wei Jin; Dongning Wang; Changrui Liao; Ying Wang

doi:10.1364/OE.18.005496

Structural long period gratings made by drilling micro-holes in photonic crystal fibers with a femtosecond infrared laser

Shujing Liu, Long Jin, Wei Jin, Dongning Wang, Changrui Liao, Ying Wang

The Hong Kong Polytechnic University

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

85 Citations (Scopus)

Abstract

We present a new method for fabricating structural long-period gratings (LPGs) in photonic-crystal fibers (PCFs The method is based on periodically drilling holes into the PCF cladding along the length of the fiber by use of a focused femtosecond infrared laser. A very short LPG with only 9 periods and a grating length of < 4 mm exhibited resonance strength of over 20 dB and a polarization dependent loss of 25 dB. The high resonance strength is attributed to the strong modulated mode-field profile caused by the significant perturbation of the fiber geometry. The mechanism of LPG formation is discussed based on coupled local-mode theory.

Original language	English
Pages (from-to)	5496-5503
Number of pages	8
Journal	Optics Express
Volume	18
Issue number	6
DOIs	https://doi.org/10.1364/OE.18.005496
Publication status	Published - 15 Mar 2010

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.18.005496

http://hdl.handle.net/10397/4387

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abstract = "We present a new method for fabricating structural long-period gratings (LPGs) in photonic-crystal fibers (PCFs The method is based on periodically drilling holes into the PCF cladding along the length of the fiber by use of a focused femtosecond infrared laser. A very short LPG with only 9 periods and a grating length of < 4 mm exhibited resonance strength of over 20 dB and a polarization dependent loss of 25 dB. The high resonance strength is attributed to the strong modulated mode-field profile caused by the significant perturbation of the fiber geometry. The mechanism of LPG formation is discussed based on coupled local-mode theory.",

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AU - Liu, Shujing

AU - Jin, Long

AU - Jin, Wei

AU - Wang, Dongning

AU - Liao, Changrui

AU - Wang, Ying

PY - 2010/3/15

Y1 - 2010/3/15

N2 - We present a new method for fabricating structural long-period gratings (LPGs) in photonic-crystal fibers (PCFs The method is based on periodically drilling holes into the PCF cladding along the length of the fiber by use of a focused femtosecond infrared laser. A very short LPG with only 9 periods and a grating length of < 4 mm exhibited resonance strength of over 20 dB and a polarization dependent loss of 25 dB. The high resonance strength is attributed to the strong modulated mode-field profile caused by the significant perturbation of the fiber geometry. The mechanism of LPG formation is discussed based on coupled local-mode theory.

AB - We present a new method for fabricating structural long-period gratings (LPGs) in photonic-crystal fibers (PCFs The method is based on periodically drilling holes into the PCF cladding along the length of the fiber by use of a focused femtosecond infrared laser. A very short LPG with only 9 periods and a grating length of < 4 mm exhibited resonance strength of over 20 dB and a polarization dependent loss of 25 dB. The high resonance strength is attributed to the strong modulated mode-field profile caused by the significant perturbation of the fiber geometry. The mechanism of LPG formation is discussed based on coupled local-mode theory.

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JO - Optics Express

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Structural long period gratings made by drilling micro-holes in photonic crystal fibers with a femtosecond infrared laser

Abstract

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