We introduce on-chip interferometers in which the spatial output interference pattern is observed along a detection plane. We show that by using photonic crystals with strong dispersive properties in these devices, highly sensitive interferometers can be realized. We discuss potentials of these interferometers in spectroscopy and sensing applications using their strong wavelength sensitivity and their ability to spatially map the spectral information of an input signal.
© 2009 Optical Society of America
Remote Sensing and Sensors
Original Manuscript: August 28, 2008
Revised Manuscript: November 5, 2008
Manuscript Accepted: November 21, 2008
Published: January 14, 2009
Maysamreza Chamanzar, Babak Momeni, and Ali Adibi, "Compact on-chip interferometers with high spectral sensitivity," Opt. Lett. 34, 220-222 (2009)