Yoshitomo Okawachi

TL;DR: It is demonstrated that stimulated Brillouin scattering can be used to generate all-optical slow-light pulse delays of greater than a pulse length for pulses as short as 16 ns in a single-mode fiber, and strongly suggest that analogous delays can be achieved using stimulated Raman scattering at telecommunication data rates.

TL;DR: A chip-based integration of microresonators and lasers produces a battery-powered comb generator that does not require external lasers, moveable optics or laboratory set-ups and should enable production of highly portable and robust frequency and timing references, sensors and signal sources.

TL;DR: In this article, the authors demonstrate a frequency comb spanning an octave via the parametric process of cascaded four-wave mixing in a monolithic, high-Q silicon nitride microring resonator.

TL;DR: A frequency comb spanning an octave via the parametric process of cascaded four-wave mixing in a monolithic, high-Q silicon nitride microring resonator is demonstrated and it is found that the comb can operate in a low-noise state with a 30 dB reduction in noise as the pump frequency is tuned into the cavity resonance.

TL;DR: This work demonstrates broadband frequency comb generation in the mid-infrared from 2.3 to 3.5 μm in a Si-N microresonator fabricated using an optimized process for decreasing intrinsic losses and overcoming stress limitations.