By Topic

Experimental verification of numerically optimized photonic crystal injector, Y-splitter, and bend

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Ayre, M. ; Microphotonics & Photonic Crystals Res. Group, Univ. of St. Andrews, Fife, UK ; Karle, T.J. ; Lijun Wu ; Davies, T.
more authors

We present the experimental measurement of a photonic crystal (PhC) device comprising an injector, Y-splitter, and 60° bend. The complete device consists of a 9-μm-long injector tapering down from 5 μm into a triangular-lattice-of-holes single-line defect waveguide with period a=430 nm and 36.2% air filling factor (corresponding to a radius over period (r/a) ratio of 0.30), an optimized Y-junction, 60° bend and output injectors, with a total device footprint of 30 μm. This is etched into a GaAs/AlGaAs heterostructure using chlorine/argon chemically assisted ion beam etching (CAIBE). An erbium-doped fiber amplifier (EDFA)-based source and Fabry-Perot technique are used to characterize the device. The device displays a bandwidth of approximately 110 nm in the 1.55 μm window, and a transmission of 70% relative to the same length of 5-μm-wide waveguide. This is compared with three-dimensional finite-difference time-domain (3-D FDTD) results, which have a bandwidth and transmission of 120 nm and 75%, respectively. The highlight of this paper is the close agreement of the numerically optimized complete microcircuit with its experimental equivalent, and the significant improvement in bandwidth over previous work on Y-junctions.

Published in:

Selected Areas in Communications, IEEE Journal on  (Volume:23 ,  Issue: 7 )