نتایج جستجو برای: clad and g clad helices

تعداد نتایج: 16873018  

2003
Muhammad Ajmal Khan Hussain A. Jamid

In this work, a reflection-mode TE pass polarization filter is proposed and analyzed. Guided TE-polarized waves are highly reflected at the input end of this polarizer. On the other hand guided TM-polarized waves experience very low reflection at the same input end. The TE pass polarizer is realized by adding a corrugation in cascade with a simple three layer metal-clad optical waveguide. The m...

2013
Iftekhar Khan Shah-Jalal Sarker Steven Morris

Methods Data from 2 separate non-small cell lung cancer clinical trials (TOPICAL and SOCCAR) are used to develop and validate the BB model. Comparisons with Linear, TOBIT, Quantile, Quadratic and CLAD models were carried out. The mean prediction error, R, proportion predicted outside the valid range, clinical interpretation of coefficients, model fit and estimation of Quality Adjusted Life Year...

Journal: :Optics express 2013
H Hoogland A Thai D Sánchez S L Cousin M Hemmer M Engelbrecht J Biegert R Holzwarth

We report on a dual output all-PM fiber laser system running at 100 MHz repetition rate offering coherent broadband and narrowband pulses centered at 2.05 µm with a spectral FWHM bandwidth of 60 nm and 1.5 nm at up to 360 mW and 500 mW, respectively. The broadband pulses are compressed down to 135 fs. The multi-stage double-clad amplifier based on Tm/Ho codoping is seeded by a supercontinuum li...

Journal: :Optics express 2006
P Andrew Anderson Bradley S Schmidt Michal Lipson

Slot waveguides allow for high optical confinement in a planar optical waveguide. Here we show a method for maintaining this high degree of confinement in slot waveguides with sharp bends. This high confinement can be achieved by using an asymmetric slot-based structure, where the mode in the bend remains localized in the slot region. We show that the relative power inside the slot can be as hi...

2010
K. A. Shore

Analytical approximations for the direct-current modulation bandwidth are obtained which highlight the deleterious effect of enhanced modal refractive index on the resonance frequency of metal-clad nanolasers. The concomitant utilisation of Purcell cavity-enhanced spontaneous emission is shown, in principle, to compromise achievable modulation bandwidths further. Using simplified forms for the ...

2015
Xin Yu Ehsan Arbabi Lynford L. Goddard Xiuling Li Xiaogang Chen

Articles you may be interested in Vertically integrated metal-clad/silicon dioxide-shell microtube arrays for high-spatial-resolution light stimuli in saline Appl. On-chip intra-and inter-layer grating couplers for three-dimensional integration of silicon photonics Appl. Monolithically integrated low-loss silicon photonic wires and three-dimensional tapered couplers fabricated by self-profile t...

2011
Bai Nie Dmitry Pestov Frank W. Wise Marcos Dantus

A double-clad Yb-doped all-normal-dispersion fiber laser with a narrow intra-cavity spectral filter is demonstrated to produce 22 nJ pulses at 42.5 MHz repetition rate. These pulses are characterized and compressed via mulitphoton intrapulse interference phase scan to as short as 42 fs and 10 nJ/pulse. Adaptive compression underlies the achievement of 250-kW peak power, which enables efficient ...

1998
D. W. Hewak R. C. Moore T. Schweizer J. Wang B. Samson W. S. Brocklesby D. N. Payne

The authors report on the first demonstration of optical fibres based on the Ga:La:S system. Core-clad structures have been fabricated by the rod and tube method and pulled into lengths > 200m. Transmission over the wavelength range I .O to 6.5~~ with fibre loss approaching the absorption and scattering level of the bulk glass. is obtained, opening the possibility of new fibre device applicatio...

Journal: :Optics letters 2014
Joanna Ptasinski Iam-Choon Khoo Yeshaiahu Fainman

Active optical tuning of silicon racetrack resonators clad in dye-doped blue phase liquid crystals (BPLCs) is experimentally demonstrated. An adiabatic racetrack resonator geometry that allows for enhanced tuning is presented and analyzed. The resonance shift of an unmodified geometry racetrack is Δλ=0.7 nm, while an adiabatic racetrack achieves a Δλ=1.23 nm resonance shift because of a greater...

2016
Mengmeng Tao Ting Yu Zhenbao Wang Hongwei Chen Yanlong Shen Guobin Feng Xisheng Ye

Super-flat supercontinua are generated from a double clad Tm-doped fiber amplifier. Two different laser configurations are investigated and compared. In the direct-output configuration, the long-wavelength edge of the supercontinuum spectra is extended to beyond 2.65 μm with a 10 dB bandwidth of 740 nm. In the passive pigtail configuration, the generated supercontinuum features excellent flatne...

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