Title:
Planar photonic crystal microspectrometers in silicon-nitride for the visible range
Planar photonic crystal microspectrometers in silicon-nitride for the visible range
Files
Authors
Momeni, Babak
Hosseini, Ehsan Shah
Adibi, Ali
Hosseini, Ehsan Shah
Adibi, Ali
Authors
Person
Advisors
Advisors
Associated Organizations
Organizational Unit
Series
Collections
Supplementary to
Permanent Link
Abstract
We demonstrate the feasibility of forming a compact integrated photonic spectrometer for operation in the visible wavelength range using the dispersive properties of a planar photonic crystal structure fabricated in silicon nitride. High wavelength resolution and compact device sizes in these spectrometers are enabled by combining superprism effect, negative diffraction effect, and negative refraction effect in a 45° rotated square lattice photonic crystal. Our experimental demonstration shows 1.2 nm wavelength resolution in a 70 µm by 130 µm photonic crystal structure with better performance than alternative structures for on-chip spectroscopy, confirming the unique capability of the proposed approach to realize compact integrated spectrometers.
Sponsor
Date Issued
2009-09
Extent
Resource Type
Text
Resource Subtype
Article