Highly Nonlinear Dispersion-Flattened Polarization-Maintaining Photonic Crystal Fiber in 1.55 µm Region

Takashi YAMAMOTO  Hirokazu KUBOTA  Satoki KAWANISHI  Masatoshi TANAKA  Syun-ichiro YAMAGUCHI  

IEICE TRANSACTIONS on Electronics   Vol.E87-C   No.2   pp.250-252
Publication Date: 2004/02/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Optoelectronics
photonic crystal fiber,  supercontinuum,  dispersion-flatness,  polarization-maintainability,  

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We describe the first highly nonlinear dispersion-flattened polarization-maintaining photonic crystal fiber designed for nonlinear optics applications in the 1.55 µm region. The nonlinear coefficient of the fiber is 19 (W-1km-1), which is ten times that of dispersion shifted fiber. The chromatic dispersion and dispersion slope of the fiber at 1.55 µm are -0.23 ps/km/nm and 0.01 ps/km/nm2, respectively. We demonstrate the generation of a supercontinuum using the photonic crystal fiber. A symmetrical supercontinuum over 40 nm is obtained by injecting 1562 nm, 2.2 ps, and 40 GHz optical pulses into the 200 m-long photonic crystal fiber.