High-confidence cooperativity estimation in presence of background for a thru device

Obtain a high-confidence estimate of the cooperativity for the side-coupled (“thru”) device labeled set(2,3)dev(8,1) by developing a measurement or analysis method that accurately separates the dipole-induced transparency signal from background transmission when the background cannot be eliminated with the current setup.

Background

For a side-coupled cavity (“thru” geometry), the dipole-induced transparency (DIT) model depends sensitively on the ratio of coupling and intrinsic losses, making accurate fitting susceptible to background transmission. In the reported measurement, background contributions could not be eliminated, preventing a robust cooperativity estimate.

While the authors provide a lower bound under the assumption of no background, a reliable method to decouple background from the DIT signal is required to establish a high-confidence cooperativity value for this device.