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Title: Femtosecond laser inscribed phase masks for fibre Bragg grating sensor inscription
Authors: Sugden, Kate 
Lee, Graham
Kalli, Kyriacos 
Yan, Zhijun
Adebayo, Dotun
Komodromos, Michael
Koutsides, Charalambos 
Keywords: Femtosecond laser inscriptions
Fibre bragg grating sensors
Higher-order diffraction
Interference effects
Laser-material interactions
Phase masks
Talbot effects
Fiber bragg gratings
Rapid prototyping
Ultrafast lasers
Ultrashort pulses
Issue Date: 2012
Source: 22nd International Conference on Optical Fiber Sensors, Beijing, China, 15-19 October 2012
Abstract: We present femtosecond laser inscribed phase masks for the inscription of Bragg gratings in optical fibres. The principal advantage is the flexibility afforded by the femtosecond laser inscription, where sub-surface structures define the phase mask period and mask properties. The masks are used to produce fibre Bragg gratings having different orders according to the phase mask period. The work demonstrates the incredible flexibility of femtosecond lasers for the rapid prototyping of complex and reproducible mask structures. We also consider three-beam interference effects, a consequence of the zeroth-order component present in addition to higher-order diffraction components. 2012 SPIE.
ISSN: 0277786X
DOI: 10.1117/12.975102
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

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