Using a micromanipulation technique, a planar photonic crystal nanocavity made from a thin semiconductor membrane is released from the host semiconductor and attached to the end facet of a standard single-mode optical fiber. The cavity spectrum can be read out through the fiber by detecting the photoluminescence of embedded quantum dots. The modified fiber end serves as a fiber-optic refractive index sensor.
© 2012 Optical Society of America
Fiber Optics and Optical Communications
Original Manuscript: November 21, 2011
Revised Manuscript: January 16, 2012
Manuscript Accepted: January 17, 2012
Published: February 22, 2012
Bowen Wang, Timothy Siahaan, Mehmet A. Dündar, Richard Nötzel, Marinus J. van der Hoek, Sailing He, and Rob W. van der Heijden, "Photonic crystal cavity on optical fiber facet for refractive index sensing," Opt. Lett. 37, 833-835 (2012)