title: Sub-nm resolution cavity enhanced microspectrometer.
abstract: A novel on-chip spectrometer device using combined functionalities of a micro-ring resonator and a planar diffraction grating is proposed. We investigate the performance of this architecture by implementing it in a silicon-on-insulator platform. We experimentally demonstrate such a device with 100 channels, 0.1 nm channel spacing and a channel crosstalk less than -10 dB. The entire device occupies an area of less than 2 mm(2). Based on our initial results we envision that this device enables the possibility of the realization of low-cost and high-resolution ultra-compact spectroscopy.
authors.affiliation: School of Electrical and Computer Engineering, Cornell University, Ithaca, N.Y. 14850, USA.
authors.forename: Bernardo B C
authors.initials: BB
authors.lastname: Kyotoku
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.forename: Michal
authors.initials: M
authors.lastname: Lipson
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008904:Miniaturization; D036103:Nanotechnology / Q000295:instrumentation*; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D013057:Spectrum Analysis / Q000295:instrumentation*; D014159:Transducers