Fiber Endface Sealing Technique for Optical Connection of Holey Fibers with Low Loss and Reflection

Masaki WAKI  Kyozo TSUJIKAWA  Yuji AZUMA  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.5   pp.1620-1624
Publication Date: 2012/05/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.1620
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Optical Fiber for Communications
HAF,  PCF,  optical connector,  

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We propose a new fiber endface sealing technique for the optical connection of holey fibers (HFs). We experimentally investigate the optimum sealing condition for physical contact using a carbon dioxide (CO2) laser. We use this technique to fabricate an HF connector, and achieve low splice loss and a high return loss when splicing with a conventional SMF connector. With hole-assisted fiber (HAF), the obtained splice and return losses are almost the same as those obtained with the conventional method. In particular, with photonic crystal fiber (PCF), we obtained a minimum splice loss of 0.2 dB and a return loss exceeding 50 dB at wavelengths of 1.31 and 1.55 µm.