Low-loss polarization-maintaining fusion splicing of single-mode fibers and hollow-core photonic crystal fibers, relevant for monolithic fiber laser pulse compression

Jesper Toft Kristensen, Andreas Houmann, Xiaomin Liu, Dmitry Turchinovich

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We report on highly reproducible low-loss fusion splicing of polarization-maintaining single-mode fibers (PM-SMFs) and hollow-core photonic crystal fibers (HC-PCFs). The PM-SMF-to-HC-PCF splices are characterized by the loss of 0.62 ± 0.24 dB, and polarization extinction ratio of 19 ± 0.68 dB. The reciprocal HC-PCF-to-PM-SMF splice loss is found to be 2.19 ± 0.33 dB, which is caused by the mode evolution in HC-PCF. The return loss in both cases was measured to be −14 dB. We show that a splice defect is caused by the HC-PCF cleave defect, and the lossy splice can be predicted at an early stage of the splicing process. We also demonstrate that the higher splice loss compromises the PM properties of the splice. Our splicing technique was successfully applied to the realization of a low-loss, environmentally stable monolithic PM fiber laser pulse compressor, enabling direct end-of-the-fiber femtosecond pulse delivery
    Original languageEnglish
    JournalOptics Express
    Volume16
    Issue number13
    Pages (from-to)9986-9995
    ISSN1094-4087
    DOIs
    Publication statusPublished - 2008

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