Pure photonic crystal waveguiding for signal processing at optical junctions

Selin H.G. Teo, A. Q. Liu, J. Singh, M. B. Yu, J. H. Wu, Xuming Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

This paper describes a photonic crystal (PhC) waveguide of two-dimensional (2D) photonic bandgap lattice structure. Typically, PhC waveguides demonstrated have line defects of high index material placed in an otherwise periodic lattice structure, which serves to prohibit the propagation of light radiation within; such technique makes use of PhC waveguiding in the lateral axis and index confinement in the vertical axis. Here, pure 2D PhC waveguiding at 1550 nm without index guiding assistance was achieved instead, through successful fabrication of high aspect ratio pillar-type PhC lattices with intersecting orthogonal line defects and tunneling cavities. The experiment results were found to coincide with first principle simulation results of different tunneling cavity dimensions. These optical junctions therefore can be used for effective control of optical signal levels (via the phenomenon of drude absorption) to achieve ultrafast optical switching by means of high power 200 fs laser pulses as control signals.
Original languageEnglish
Title of host publicationTRANSDUCERS '05 - 13th International Conference on Solid-State Sensors and Actuators and Microsystems - Digest of Technical Papers
Pages1039-1042
Number of pages4
Volume1
DOIs
Publication statusPublished - 9 Nov 2005
Externally publishedYes
Event13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05 - Seoul, Korea, Republic of
Duration: 5 Jun 20059 Jun 2005

Conference

Conference13th International Conference on Solid-State Sensors and Actuators and Microsystems, TRANSDUCERS '05
CountryKorea, Republic of
CitySeoul
Period5/06/059/06/05

Keywords

  • Optical crossing
  • Photonic crystal
  • Waveguiding intersection

ASJC Scopus subject areas

  • Engineering(all)

Cite this