We present an all-in-one, computer-controlled, measurement setup able to evaluate propagation losses, effective group index, and mode size of integrated optical devices and optical fibers. The possibility to use a single setup, instead of three separate ones, enables faster measurements, improvements in terms of reproducibility and precision, and reduction of systematic errors. Control of the operating conditions, easier system upgrade besides cost and laboratory space savings are other additional features of this system. To confirm proper operation and versatility of the proposed setup, different samples are successfully characterized, and results are presented and discussed.
We report on a guided wave asynchronous heralded photon source based on the creation of non-degenerate photon pairs by spontaneous parametric down conversion in a Periodically Poled Lithium Niobate waveguide. We show that using the signal photon at 1310\nm as a trigger, a gated detection process permits announcing the arrival of single photons at 1550nm at the output of a single mode optical fiber with a high probability of 0.37. At the same time the multi-photon emission probability is reduced by a factor of 10 compared to poissonian light sources.
In this paper we propse various applications of guided wave optics to quantum optics experiments. An immediate application concerns entangled photon sources. Long term objectives will be mulitparticle (n>2) and multiport configurations, needed for quantum error-correction. We show how guided wave optics, incorporating both integrated optics and fiber optics, could provide a realistic means of constructing experiments and devices.
In this paper we propose various applications of guided wave optics to quantum optics experiments. As quantum optics moves on to multiparticle and multiport configurations, guided wave optics, incorporating both integrated optics and fiber optics, could provide a realistic means of constructing experiments and devices.
We present an experimental observation and numerical simulation of the evolution of the mode field profile in a Periodic Segmented Waveguide. A good agreement between the experimental and the numerical results is observed.
Using the coupled mode approach we present theoretical modelling of quasi phase-matched parametric amplification in a planar waveguide in which, the pump and signal are guided while the idler is radiated into the substrate. Numerical results on optimum waveguide parameters (which provide maximum signal gain) for a given pump and signal wavelengths are presented for a periodically domain reversed, proton-exchanged LiNbO3 planar waveguide. The proposed configuration is shown to provide large signal gain bandwidth.
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