Presentation 2007-11-21
Designs and Fabrications of Photonic Crystal Fiber Couplers with Air Hole Controlled Tapers
Hirohisa YOKOTA, Hiroki KAWASHIRI, Hirotomo YASHIMA, Yutaka SASAKI,
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Abstract(in English) Coupling characteristics of photonic crystal fiber couplers (PCFCs) were theoretically investigated. In PCFCs with air hole remaining tapers, we found that a smaller elongation ratio i.e. a stronger elongation is required to obtain optical coupling as an air hole pitch or a ratio of air hole diameter to pitch is larger. In PCFCs with air hole collapsed tapers, it was clarified that an excess loss of the PCFC becomes higher as an air hole collapsed elongation ratio becomes larger. It was also clarified that an air hole remaining PCFC has wavelength-flattened characteristics in extinction ratio compared to an air hole collapsed PCFC. Air hole remaining PCFCs and air hole collapsed PCFCs were fabricated using a CO_2 laser irradiation technique. We could successfully control whether air holes in the PCFC taper were remaining or collapsed by adjusting the irradiated laser power in the elongation process of the PCFC fabrication.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Photonic crystal fiber / Optical fiber coupler / Beam propagation method / CO_2 laser irradiation technique
Paper # OFT2007-42
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Conference Information
Committee OFT
Conference Date 2007/11/14(1days)
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Registration To Optical Fiber Technology (OFT)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Designs and Fabrications of Photonic Crystal Fiber Couplers with Air Hole Controlled Tapers
Sub Title (in English)
Keyword(1) Photonic crystal fiber
Keyword(2) Optical fiber coupler
Keyword(3) Beam propagation method
Keyword(4) CO_2 laser irradiation technique
1st Author's Name Hirohisa YOKOTA
1st Author's Affiliation Faculty of Engineering, Ibaraki University()
2nd Author's Name Hiroki KAWASHIRI
2nd Author's Affiliation Faculty of Engineering, Ibaraki University
3rd Author's Name Hirotomo YASHIMA
3rd Author's Affiliation Faculty of Engineering, Ibaraki University
4th Author's Name Yutaka SASAKI
4th Author's Affiliation Faculty of Engineering, Ibaraki University
Date 2007-11-21
Paper # OFT2007-42
Volume (vol) vol.107
Number (no) 344
Page pp.pp.-
#Pages 5
Date of Issue