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We present optically-controlled extinction ratio (ER) and Q-factor tunable silicon microring resonators using optical forces. Two opto-mechanical structures are studied, i.e. double-clamped and cantilever. A wide ER tuning range from 5.6 to 34.2dB is achieved. Low control power of 1.4mW is required for cantilever structure.
Microbubbles are thin spherical shells that can support whispering gallery modes, with evanescent fields inside and outside the resonator. We report on using microbubble resonators for temperature sensing via the large temperature dependent refractive index of fluid contained in the microbubble and for optomechanics.
We present an optically-controlled tunable silicon DQPSK demodulator using optical force. It employs a cantilever nanostring to adjust phase shift by a counter-propagating control light. 40-Gbaud/s DQPSK demodulation is implemented using the designed opto-mechanical tunable DQPSK demodulator with the performance evaluated by Q-factor and BER.
The paper introduces optical nano-hair structures made from high-κ dielectrics that can be used to impart an arbitrary phase function to the transmitted beam. The concept behind the design of these new structures is elaborated.
We present an electrically tunable optical device with ultra-broadband tunability operating in 2–10 µm spectrum. We also, for the first time, optically observe resistive switching behavior in reflection measurements under electrical bias.
We engineer the complex refractive index n+ik of sputtered amorphous silicon by rapid thermal annealing. An order-of-magnitude reduction of the extinction coefficient k is achieved.
Microholographic recording1) is a promising technology for realizing next-generation large-capacity optical data storage systems because of its three-dimensional nature and its affinity with conventional optical disk systems. To ensure media exchangeability in the optical data storage systems, it is necessary to clarify the influence of aberrations in the optics on a readout signal. In the microholographic...
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