Now showing items 1-6 of 6
Quasi-free-space optical coupling between diffraction grating couplers fabricated on independent substrates
(Georgia Institute of Technology, 2004-10)
Optical coupling between preferential-order volume diffraction grating couplers fabricated on independent substrates is demonstrated. The coupling efficiency between gratings is quantified as a function of both grating and ...
Absorbing boundary conditions for low group velocity electromagnetic waves in photonic crystals
(Georgia Institute of Technology, 2011-03)
We present an efficient method for the absorption of slow group velocity electromagnetic waves in photonic crystal waveguides (PCWs). We show that adiabatically matching the low group velocity waves to high group velocity ...
Attenuation in waveguides on FR-4 boards due to periodic substrate undulations
(Georgia Institute of Technology, 2007-04)
The guided-mode attenuation associated with optical-interconnect-polymer waveguides fabricated on FR-4 printed-circuit boards is quantified. The rigorous transmission-line network approach is used and the FR-4 substrate ...
Compact silicon diffractive sensor: design, fabrication, and prototype
(Georgia Institute of Technology, 2012-07)
An in-plane constant-efficiency variable-diffraction-angle grating and an in-plane high-angular-selectivity grating are combined to enable a new compact silicon diffractive sensor. This sensor is fabricated in silicon-on-insulator ...
Wavelength response of waveguide volume grating couplers for optical interconnects
(Georgia Institute of Technology, 2004-09)
The wavelength response of a waveguide volume grating coupler (WVGC) is analyzed for coupling light from a slab waveguide into the superstrate. A leaky-mode approach is used in conjunction with rigorous coupled-wave analysis. ...
Preconditioned superprism-based photonic crystal demultiplexers: analysis and design
(Georgia Institute of Technology, 2006-11)
We present the analysis and design of a new type of photonic crystal (PC) demultiplexers (i.e., preconditioned demultiplexer), in which the simultaneous existence of the superprism effect and the negative effective index ...