Cambridge Wireless Invited Talk

I had the pleasure of speaking at a Cambridge Wireless event “What’s a nanosecond between friends“, hosted by the National Physical Laboratory and in partnership with The KTN and supported by UK5G.

My talk title and abstract is below, my slides can be found on the Cambridge Wireless website.

'Inertial sensing using cavity optomechanics'

In this talk I will discuss microcavities supporting optical whispering gallery mode resonances (WGMs) which exhibit an extreme sensitivity to the cavity motion. This optomechanical coupling alters the WGM linewidth and frequency, even when the cavity is displaced by picometers. By attaching the microresonator to a cantilever, we have created an accelerometer with high-linearity and strong optomechanical coupling to obtain micro-g (g=9.81 ms^(-2)) sensitivity, suitable for navigation or vibration sensing. After field-testing a portable WGM accelerometer prototype on a vehicle sustaining car-crash like shocks, we are now progressing with a chip-scale version using semiconductor fabrication methods with the inclusion of a WGM gyroscope.

Other speakers:

Prof. Kai Bongs
Patrick Gill
John Haine
Prof. Ashwin Seshia
Dr. Chris Marshall