Optical Properties of Low Loss (70dB/km) Hypocycloid-Core Kagome Hollow Core Photonic Crystal Fiber for Rb and Cs Based Optical Applications

We report on hypocycloid core shaped hollow-core Kagome fiber with a record loss of 70 dB/km at a spectral range of around 750-850 nm, which is compatible with Cs and Rb based applications. The fiber exhibits a single mode operation in a core diameter as large as 40 μm, and very low sensitivity to bend. We show experimentally that the bending-loss is limited by coupling between the guiding core mode and the modes in the cladding holes.

[1]  Fetah Benabid,et al.  Hollow-core Optical Fiber Gas Lasers (HOFGLAS): a review [Invited] , 2012 .

[2]  Xiang Peng,et al.  Design and fabrication of hollow-core photonic crystal fibers for high-power ultrashort pulse transportation and pulse compression. , 2012, Optics letters.

[3]  D. Allan,et al.  Surface modes in air-core photonic band-gap fibers. , 2004, Optics express.

[4]  D. Ghosh,et al.  Cladding effect on confinement and bend losses in hypocycloid-core Kagome HC-PCF , 2013, CLEO: 2013.

[5]  Alexander L. Gaeta,et al.  Low-Light-Level Optical Interactions with Rubidium Vapor in a Photonic Band-Gap Fiber , 2006 .

[6]  L. Vincetti,et al.  Cups curvature effect on confinement loss in hypocycloid-core Kagome HC-PCF , 2013, CLEO: 2013.

[7]  W. Wadsworth,et al.  Low loss silica hollow core fibers for 3-4 μm spectral region. , 2012, Optics express.

[8]  P. Roberts,et al.  Low loss broadband transmission in hypocycloid-core Kagome hollow-core photonic crystal fiber. , 2011, Optics letters.

[9]  F Benabid,et al.  Electromagnetically induced transparency in Rb-filled coated hollow-core photonic crystal fiber. , 2007, Optics letters.

[10]  D. Allan,et al.  Low-loss hollow-core silica/air photonic bandgap fibre , 2003, Nature.

[11]  P. Roberts,et al.  Linear and nonlinear optical properties of hollow core photonic crystal fiber , 2011 .

[12]  M Miyagi,et al.  Bending losses in hollow and dielectric tube leaky waveguides. , 1981, Applied optics.

[13]  P. Roberts,et al.  Ultimate low loss of hollow-core photonic crystal fibres. , 2005, Optics express.

[14]  F Benabid,et al.  Hollow-core photonic bandgap fibre: new light guidance for new science and technology , 2006, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[15]  F Benabid,et al.  Generation and Photonic Guidance of Multi-Octave Optical-Frequency Combs , 2007, Science.