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A microresonator having Q factors greater than 200 million and featuring a silicon-nitride integrated coupling waveguide is described. The device is a critical advance for new microcavity applications requiring integrated, ultra-high-Q and millimeter-scale cavities.
In the last number of years, optical cavities which are collectively known as whispering gallery resonators (WGR) have shown their versatility across a number of research fields from photonics applications, through fundamental studies in cavity optomechanics, to sensing. One type of WGR that has more recently been developed is the bottle-like microresonator (BLMR) [1] or microbubble [2], i.e., hollow...
An optical signal level swapping function and a multi-level amplitude noise mitigation method are proposed using three parametric gain regions. Experiments demonstrate less than 1% EVM-penalty for swapping and multi-level amplitude noise mitigation is achieved.
Independent phase controls on signal/idler pairs are investigated for phase-sensitive amplification of eleven 25Gbaud 16QAM channels, and we show channels' gains can be maximized simultaneously. We further show large gain fluctuations of 6.83dB caused by HNLF's dispersion slope are suppressed to 2.04dB.
We present a 2.3-Tbit/s network switching element by exploiting double-pass LCoS technology and bidirectional nonlinear effects inside a single HNLF. We demonstrate 2.3-Tbit/s grooming switch with simultaneous functions of add/drop, data exchange, and power equalization, for 23-channel 100-Gbit/s RZ-DQPSK signals.
We demonstrate optical multiplexing of two 21.5 Gb/s DPSK signals into a single 43 Gb/s RZ-DQPSK channel with simultaneous 7-fold multicasting of the multiplexed 43 Gb/s RZ-DQPSK signal in a single periodically-poled lithium-niobate waveguide. We also demonstrate direct 7-fold multicasting of a single 43 Gb/s RZ-DQPSK signal and give a comparison of the two schemes. A bit error rate of 10-9 with power...
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