Integrated liquid crystal optical switch based on total internal reflection

Ailing Zhang, Kam Tai Chan, M. S. Demokan, Victor W C Chan, Philip Ching Ho Chan, Hoi S. Kwok, Andy H P Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

50 Citations (Scopus)


An optical switch structure which combines a planar lightwave circuit and liquid crystal is proposed and experimentally demonstrated. The switching is realized by inducing total internal reflection through controlling the refractive index of the liquid crystal. The principle and the design of the integrated optical switch are described. Experimental results suggest that anchoring of the liquid crystal molecules on nonplanar structures is very crucial in affecting the switching performance.
Original languageEnglish
Article number211108
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number21
Publication statusPublished - 23 May 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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