Octave-spanning frequency comb generation in a silicon nitride chip

Details Octave-spanning frequency comb generation in a silicon nitride chip Octave-spanning frequency comb generation in a silicon nitride chip

2011-07-27

arxiv.org/abs/1107.5555v1

Physics

Optics

Scientific paper

We 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. The comb is generated from a single-frequency pump laser at 1562 nm and spans 128 THz with a spacing of 226 GHz, which can be tuned slightly with the pump power. In addition, we investigate the RF-noise characteristics of the parametric comb and find 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.

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