Tailoring modal properties of inhibited-coupling guiding fibers by cladding modification

Understanding cladding properties is crucial for designing microstructured optical fibers. This is particularly acute for Inhibited-Coupling guiding fibers because of the reliance of their core guidance on the core and cladding mode-field overlap integral. Consequently, careful planning of the fiber cladding parameters allows obtaining fibers with optimized characteristics such as low loss and broad transmission bandwidth. In this manuscript, we report on how one can tailor the modal properties of hollow-core photonic crystal fibers by adequately modifying the fiber cladding. We show that the alteration of the position of the tubular fibers cladding tubes can alter the loss hierarchy of the modes in these fibers, and exhibit salient polarization propriety. In this context, we present two fibers with different cladding structures which favor propagation of higher order core modes – namely LP11 and LP21 modes. Additionally, we provide discussions on mode transformations in these fibers and show that one can obtain uncommon intensity and polarization profiles at the fiber output. This allows the fiber to act as a mode intensity and polarization shaper. We envisage this novel concept can be useful for a variety of applications such as hollow core fiber based atom optics, atom-surface physics, sensing and nonlinear optics.

[1]  J W Nicholson,et al.  Spatially and spectrally resolved imaging of modal content in large-mode-area fibers. , 2008, Optics express.

[2]  Rodrigo Amezcua-Correa,et al.  Modal analysis of antiresonant hollow core fibers using S2 imaging. , 2016, Optics letters.

[3]  A. Cucinotta,et al.  Inhibited coupling guiding hollow fibers for label-free DNA detection. , 2017, Optics express.

[4]  F. Benabid,et al.  A strong-field driver in the single-cycle regime based on self-compression in a kagome fibre , 2015, Nature Communications.

[5]  J. A. Buck,et al.  Fundamentals of optical fibers , 1995 .

[6]  F. Benabid,et al.  Ultralow transmission loss in inhibited-coupling guiding hollow fibers , 2017 .

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

[8]  E. Marcatili,et al.  Hollow metallic and dielectric waveguides for long distance optical transmission and lasers , 1964 .

[9]  Luca Vincetti,et al.  Empirical formulas for calculating loss in hollow core tube lattice fibers. , 2016, Optics express.

[10]  E. Dianov,et al.  Demonstration of a waveguide regime for a silica hollow--core microstructured optical fiber with a negative curvature of the core boundary in the spectral region > 3.5 μm. , 2011, Optics express.

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

[12]  W. Wadsworth,et al.  Cavity-based mid-IR fiber gas laser pumped by a diode laser , 2016 .

[13]  Michael H. Frosz,et al.  Analytical formulation for the bend loss in single-ring hollow-core photonic crystal fibers , 2016, 1611.02581.

[14]  P. St. J. Russell,et al.  Higher-order mode suppression in twisted single-ring hollow-core photonic crystal fibers. , 2017, Optics letters.

[15]  P. Roberts,et al.  Low loss broadband transmission in optimized core-shape Kagome hollow-core PCF , 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.

[16]  P. Russell,et al.  Broadband robustly single-mode hollow-core PCF by resonant filtering of higher-order modes. , 2016, Optics letters.

[17]  D. M. Atkin,et al.  Full 2-D photonic bandgaps in silica/air structures , 1995 .

[18]  J. Knight,et al.  Hollow antiresonant fibers with reduced attenuation. , 2014, Optics letters.

[19]  Roland Ryf,et al.  LCoS-based mode shaper for few-mode fiber. , 2013, Optics express.