@article{pearce, title = {Hollow-core PCF for guidance in the mid to far infra-red}, author = {G.J. Pearce and J.M. Pottage and D.M. Bird and P.J. Roberts and J.C. Knight and P.S.J. Russell}, crossref = {http://dx.doi.org/10.1364/OPEX.13.006937}, journal = {Optics Express}, month = 09, number = 18, pages = {6937-6946}, volume = 13, year = 2005, day = 05, url = {http://www.opticsexpress.org/abstract.cfm?id=85366}, abstract = {A major limitation to attaining low-loss single-mode guidance in hollow core photonic crystal fibre (PCF) is surface guided modes that are trapped in the core surround. This is particularly severe when high index (n > 2) glasses are used. By modelling a structure that has the characteristic features of a realistic fibre we show that, by tuning the thickness of the core wall, the influence of these 'surface' modes can be minimised. For a refractive index of 2.4 we predict power-in-air fractions of over 95% over a fractional bandwidth of similar to 5%, peaking at over 98%. The designs are appropriate for mid- to far-IR PCFs for which suitable glasses (e.g., tellurites and chalcogenides) have high refractive indices.}, biburl = {http://www.bibsonomy.org/bibtex/2c5961e0984de8387e6c08a50a5271d36/div3}, keywords = {infrared fiber_fabrication Fiber_optics fiber_design div3} } @article{cordeiro, title = {Engineering the dispersion of tapered fibers for supercontinuum generation}, author = {C.M.B. Cordeiro and W.J. Wadsworth and T.A. Birks and P.S.J. Russell}, crossref = {http://dx.doi.org/10.1364/OL.30.001980}, journal = {Optics Letters}, number = 15, pages = {1980-1982}, volume = 30, year = 2005, url = {http://www.opticsinfobase.org/abstract.cfm?URI=ol-30-15-1980}, abstract = {We experimentally demonstrate dispersion tailoring of tapered fibers by immersing them in fluids. We obtain a 1200 nm wide supercontinuum in a train of two tapered fibers pumped by a low-cost diode-pumped Nd:YAG laser with a pulse width of 0.6 ns and an output power of 40 mW, where one tapered fiber is immersed in heavy water. To our knowledge, this is the widest spectrum ever generated with a system of such simplicity.}, biburl = {http://www.bibsonomy.org/bibtex/2f9f25c85e2f265d8c2e3e79eb0e26b02/div3}, keywords = {four-wave_mixing nonlinear_optics fibers div3 sources} } @misc{ieKey, title = {Linear and nonlinear guidance in an ultralow loss planar glass membrane}, author = {N. Y. Joly and T. A. Birks and A. Yulin and J. C. Knight and P. St. J. Russell}, crossref = {http://dx.doi.org/10.1364/OL.30.002469}, journal = { Optics Letters}, number = 18, pages = {2469-2471}, volume = 30, year = 2005, url = {http://www.opticsinfobase.org/abstract.cfm?URI=ol-30-18-2469}, description = {Linear and nonlinear guidance in an ultralow loss planar glass membrane}, abstract = {We describe the fabrication and characterization of a free-standing silica glass membrane waveguide formed using fiber fabrication processes. The membrane has a thickness of 0.6 µm and a width of 60 µm and is many meters long. The optical attenuation is measured as 0.4 dB/m. Such attenuation outperforms that of conventional planar waveguides by several orders of magnitude.}, biburl = {http://www.bibsonomy.org/bibtex/29e37647fe538eda0fd6db3b83c6f70f7/div3}, keywords = {planar waveguides div3 ultrafast_phenomena} } @article{fulconis, title = {High brightness single mode source of correlated photon pairs using a photonic crystal fiber}, author = {J. Fulconis and O. Alibart and W.J. Wadsworth and P.S. Russell and J.G. Rarity}, crossref = {http://dx.doi.org/10.1364/OPEX.13.007572}, journal = {Optics Express}, month = 09, number = 19, pages = {7572-7582}, volume = 13, year = 2005, day = 19, url = {http://www.opticsexpress.org/abstract.cfm?id=85490}, description = {High brightness single mode source of correlated photon pairs using a photonic crystal fiber}, abstract = {We demonstrate a picosecond source of correlated photon pairs using a micro-structured fibre with zero dispersion around 715 nm wavelength. The fibre is pumped in the normal dispersion regime at ~708 nm and phase matching is satisfied for widely spaced parametric wavelengths. Here we generate up to 10^7 photon pairs per second in the fibre at wavelengths of 587 nm and 897 nm, while on collecting this light in single-mode-fibre-coupled Silicon avalanche diode photon counting detectors, we detect ~3.2x10^5 coincidences per second at pump power 0.5 mW.}, biburl = {http://www.bibsonomy.org/bibtex/251a2ad18a1fbd364d9ee2b75f64eb255/div3}, keywords = {fibers Nonlinear_optics quantum_optics div3} } @article{roberts, title = {Loss in solid-core photonic crystal fibers due to interface roughness scattering}, author = {P. Roberts and F. Couny and H. Sabert and B. Mangan and T. Birks and J. Knight and P. Russell}, journal = { Optics Express}, month = 10, note = { doi:10.1364/OPEX.13.007779}, number = 20, pages = {7779-7793}, volume = 13, year = 2005, day = 3, url = {http://dx.doi.org/10.1364/OPEX.13.007779}, abstract = {The loss resulting from roughness scattering at hole interfaces within solid core photonic crystal fibers is theoretically analyzed and compared with measurements on fabricated fibers. It is found that a model roughness spectrum corresponding to frozen in capillary waves gives results in reasonably good agreement with experiments on small core fibers. In particular, the roughness scattering loss is shown to be only weakly dependent on wavelength. Agreement at a larger core size requires a long length-scale cut-off to be introduced to the roughness spectrum. Due to the long range nature of the roughness correlations, the scattering is non Rayleigh in character and cannot be interpreted in terms of a local photon density of states.}, biburl = {http://www.bibsonomy.org/bibtex/27988d1a76699a6fdb48449b5c7639ef1/div3}, keywords = {fiber_optics scattering rough_surfaces div3 fiber_properties} } @article{roberts, title = {Realizing low loss air core photonic crystal fibers by exploiting an antiresonant core surround}, author = {P.J. Roberts and D.P. Williams and B.J. Mangan and H. Sabert and F. Couny and W.J. Wadsworth and T.A. Birks and J.C. Knight and P.S.J. Russell}, journal = {Optics Express}, month = 9, number = 20, pages = {8277-8285}, volume = 13, year = 2005, url = {http://www.opticsexpress.org/DirectPDFAccess/A9944CDB-BDB9-137E-C7188E71909CE391_85801.pdf?da=1&id=85801&seq=0&CFID=945573&CFTOKEN=25507011}, description = {Realizing low loss air core photonic crystal fibers by exploiting an antiresonant core surround}, abstract = {The modal properties of an air core photonic crystal fiber which incorporates an anti-resonant feature within the region that marks the transition between the air core and the crystal cladding are numerically calculated. The field intensity at the glass/air interfaces is shown to be reduced by a factor of approximately three compared to a fiber with more conventional core surround geometry. The reduced interface field intensity comes at the expense of an increased number of unwanted core interface modes within the band gap. When the interface field intensity is associated with modal propagation loss, the findings are in accord with recent measurements on fabricated fibers which incorporate a similar antiresonant feature.}, biburl = {http://www.bibsonomy.org/bibtex/20df177cf498bf3d571db0f3c13bc56c8/div3}, keywords = {fiber_fabrication Fiber_optics fiber_design div3 fiber_properties} } @article{wong, title = {Continuous-wave tunable optical parametric generation in a photonic-crystal fiber}, author = {G.K.L. Wong and A.Y.H. Chen and S.G. Murdoch and R. Leonhardt and J.D. Harvey and N.Y. Joly and J.C. Knight and W.J. Wadsworth and P.S. Russell}, journal = {J. Opt. Soc. Am. B-Opt. Phys.}, number = 11, pages = {2505-2511}, volume = 22, year = 2005, url = {http://www.opticsinfobase.org/abstract.cfm?URI=josab-22-11-2505}, location = {http: / / www. opticsinfobase. org / abstract. cfm?}, date = {(2005)}, description = {Continuous-wave tunable optical parametric generation in a photonic-crystal fiber}, abstract = {Continuous-wave and quasi-cw operation of tunable optical parametric generation has been demonstrated in a photonic-crystal fiber. The frequency shift of the generated sidebands, which arise from modulation instability, depends strongly on the detuning of the pump from the fiber's zero-dispersion wavelength. Over 30 nm of sideband tunability has been demonstrated using a 300 mW cw pump, and over 185 nm of tunability using a 1.6 W quasi-cw pump. Continuous wave and quasi-cw pumps eliminate the detrimental effects of pump-sideband walk-off. In the absence of walk-off it is the fluctuations in the index profile of the photonic-crystal fiber along its length that limit the tunable sideband range.}, biburl = {http://www.bibsonomy.org/bibtex/2bb14b82ac8f44e01945b1a926b8a403d/div3}, keywords = {fibers Nonlinear_optics Fiber_optics optical_communications div3} } @article{efimov:213902, title = {Interaction of an Optical Soliton with a Dispersive Wave}, author = {A. Efimov and A. V. Yulin and D. V. Skryabin and J. C. Knight and N. Joly and F. G. Omenetto and A. J. Taylor and P. Russell}, journal = {Physical Review Letters}, month = 11, number = 21, pages = 213902, publisher = {APS}, volume = 95, year = 2005, url = {http://link.aps.org/abstract/PRL/v95/e213902}, collaboration = {}, numpages = {4}, eid = {213902}, doi = {10.1103/PhysRevLett.95.213902}, description = {Interaction of an Optical Soliton with a Dispersive Wave}, abstract = {Scattering of a dispersive wave by optical solitons is studied experimentally in photonic crystal fibers in cases when the soliton and the dispersive wave have either identical or orthogonal polarization states. Observations of new resonant frequencies are reported. The experimental results are compared to numerical simulations and predictions from the recently derived wave vector matching conditions.}, biburl = {http://www.bibsonomy.org/bibtex/22e69049da9ec1be88acc1efd829ba327/div3}, keywords = {optical_fibre_dispersion optical_solitons photonic_crystals optical_fibre_polarisation light_scattering div3} } @article{benabid:213903, title = {Stokes Amplification Regimes in Quasi-cw Pumped Hydrogen-Filled Hollow-Core Photonic Crystal Fiber}, author = {F. Benabid and G. Antonopoulos and J. C. Knight and P. St. J. Russell}, journal = {Physical Review Letters}, number = 21, pages = 213903, publisher = {APS}, volume = 95, year = 2005, url = {http://link.aps.org/abstract/PRL/v95/e213903}, collaboration = {}, numpages = {4}, eid = {213903}, doi = {10.1103/PhysRevLett.95.213903}, description = {Stokes Amplification Regimes in Quasi-cw Pumped Hydrogen-Filled Hollow-Core Photonic Crystal Fiber}, abstract = {Pure rotational stimulated Raman scattering spectra containing nine strong spectral components were generated from a ~11 m long hollow-core photonic crystal fiber filled with hydrogen and pumped with nanosecond pulses having energies around 100–300 nJ. Observation of both transient and steady-state scattering threshold behavior is reported. Passage from the transient to the steady state is observed with a pulse as long as 14 ns. Convenient analytical expressions for energy and power threshold are deduced for the present configuration.}, biburl = {http://www.bibsonomy.org/bibtex/26a1f3368f0e33a91e0b18c25f0e86013/div3}, keywords = {photonic_crystals stimulated_Raman_scattering div3 optical_fibres} }