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We present single- and multifrequency Brillouin lasers based on chalcogenide photonic chip. The high Brillouin gain of chalcogenide and the small waveguide cross-section make it possible to achieve lasing in a few centimeter long waveguide.
We demonstrate a narrow linewidth Brillouin ring-cavity laser based on chalcogenide photonic chip. The gain medium is a 7 cm-long As2S3 waveguide with a cross-section of 4μm × 850nm and the Brillouin gain coefficient of 0.7·10−9m/W. The waveguides are equipped with vertical tapers so that the coupling loss is reduced. The lasing threshold is approximately PL=360 mW, almost 5 times lower than the calculated...
Dynamic wavelength switching of a phase-shifted fiber grating cavity with electrical pulses is studied experimentally and numerically. Simulations accurately describe observations. The effect of acoustic oscillations and fiber Bragg grating cavity refilling explains the results.
We experimentally demonstrate a Bragg grating-based all-optical switch in a highly nonlinear Bi2O3 fiber. We achieve 18-fold power reduction for a 6.5 dB switching ratio compared with previous demonstrations in silica fibers.
Dynamic frequency changes of light trapped in a fiber grating-based cavity, which is detuned by RF pulses, are detected by a simple, elegant, high-resolution method in which the trapped light beats with the incoming light.
The method of spatial switching of the propagation direction of an optical signal, based on the effect of signal wave reflection upon interaction with a high-power pump beam in bulk photorefractive media with defocusing nonlinearity has been considered for the first time. Criteria of signal reflection from a pump-induced optical inhomogeneity in a material are determined. Trajectories of the signal...
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