(2013-10-15) Frank, Ian Ward; Loncar, Marko; Capasso, Federico; Hu, Evelyn
We investigate the properties of integrated dielectric filters for the purposes of on-chip routing of photons. We started with the use of high quality factor tunable photonic crystal nanobeam cavities and moving on to examine a new class of reflection based reverse designed filters that maintain the footprint of a waveguide while allowing for arbitrary amplitude and phase response.
(American Chemical Society (ACS), 2013) Yu, Chunxiao; Kim, Hyunwoo; de Leon, Nathalie Pulmones; Frank, Ian Ward; Robinson, Jacob T.; McCutcheon, Murray; Liu, Mingzhao; Lukin, Mikhail; Loncar, Marko; Park, Hongkun
We report a new approach for realizing a flexible photonic crystal (PC) cavity that enables wide-range tuning of its resonance frequency. Our PC cavity consists of a regular array of silicon nanowires embedded in a polydimethylsiloxane (PDMS) matrix and exhibits a cavity resonance in the telecommunication band that can be reversibly tuned over 60 nm via mechanical stretching—a record for two-dimensional (2D) PC structures. These mechanically reconfigurable devices could find potential applications in integrated photonics, sensing in biological systems, and smart materials.
