1302.4322 (Tao Cai et al.)

Controlled coupling of photonic crystal cavities using photochromic
tuning    [PDF]

Tao Cai, Ranojoy Bose, Glenn S. Solomon, Edo Waks

We present a method to control the resonant coupling interaction in a coupled-cavity photonic crystal molecule by using a local and reversible photochromic tuning technique. We demonstrate the ability to tune both a two-cavity and a three-cavity photonic crystal molecule through the resonance condition by selectively tuning the individual cavities. Using this technique, we can quantitatively determine important parameters of the coupled-cavity system such as the photon tunneling rate. This method can be scaled to photonic crystal molecules with larger numbers of cavities, which provides a versatile method for studying strong interactions in coupled resonator arrays.

View original: http://arxiv.org/abs/1302.4322