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Implementations of quantum information require single-photon detectors (SPDs) with high detection efficiency (DE) at a wavelength of 940 nm, which is a challenge for the available semiconducting SPDs. Superconducting nanowire SPDs (SNSPDs) are capable of detecting visible and near-infrared single photons with high DE. However, these detection capabilities place stringent design requirements on the...
We simulate an arbitrary chirp waveform generator to explore the fiber transmission performance of the output of chirp-inducing devices. Various chirp regimes are considered to find the optimum chirp profile for a post-compensated fiber link. If a chirp profile has a peak on the signal edges, ±5 ps/nm residual dispersion on a 40 Gb/s RZ signal results in ∼2 dB higher power penalty compared to a chirp...
We demonstrate a tapered dual-core fiber that splices to standard fiber at one end and butt couples to an uncoated InP ridge waveguide at the other, achieving a fiber-to-chip coupling loss of ~1.8 dB.
We report the realization of low-cost in-fiber WDM device function utilizing efficient side-detection of strong radiation mode out-coupling from tilted FBGs. The spatial-to-spectral conversion efficiency as high as 0.32 mm/nm is demonstrated.
Summary form only given. In this paper we present the fabrication and measurement of the first three bit optical fiber Bragg grating true time delay (TTD) delay line capable of producing time delays of the order of 10 ps. This delay line is suitable for beamforming control at RF frequencies up to 2.8 GHz. A fiber Bragg grating delay line, containing eight gratings, was fabricated in boron germania...
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