Abstract

We propose and experimentally demonstrate a demultiplexer with point-defect resonators and a reflection feedback mechanism in a photonic crystal waveguide (PCW). A tapered PCW has been chosen as the necessary reflector, which enhances the drop efficiency. Due to the variation of the single-mode waveguide width of the tapered PCW, spatial alteration of the effective refractive index can be achieved. This phenomenon is used to reflect back the forward propagating wave which is then coupled again to the drop channels via the resonators. High transmission efficiency to the dropout channels is numerically predicted by calculations, either in two- and three-dimensional models, and analytically described by a coupled-mode theory. Moreover, an experimental realization in the microwave regime provides confirmation that the targeted wavelengths can be properly transmitted at the drop channels with low crosstalk and relatively high efficiencies.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Design of photonic crystal waveguides for evanescent coupling to optical fiber tapers and integration with high-Q cavities

Paul E. Barclay, Kartik Srinivasan, and Oskar Painter
J. Opt. Soc. Am. B 20(11) 2274-2284 (2003)

Band-dropping via coupled photonic crystal waveguides

Mehmet Bayindir and Ekmel Ozbay
Opt. Express 10(22) 1279-1284 (2002)

Photonic crystal channel drop filter with a wavelength-selective reflection micro-cavity

Hongliang Ren, Chun Jiang, Weisheng Hu, Mingyi Gao, and Jingyuan Wang
Opt. Express 14(6) 2446-2458 (2006)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Supplementary Material (1)

NameDescription
» Visualization 1: MP4 (1600 KB)      Light coupling to the drop-out channels for different operating wavelengths

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription