Hybrid electro-optic polymer/sol-gel waveguide directional coupler switches

Y. Enami, D. Mathine, C. T. Derose, R. A. Norwood, J. Luo, A. K.Y. Jen, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


We report electro-optic (EO) switches using transversely tapered hybrid EO/sol-gel waveguide directional couplers. The length of the active region critically reduces to 1.5 mm with transverse tapers, which is shorter by a factor of 5 than the active region with vertical tapers. The transitions are performed from a sol-gel core to two EO polymer cores with gradual index changes using gray-scaled photobleaching. The device shows the lowest switching voltage and an active length product (Vs La) of 2.9 V cm with a guest-host EO polymer AJLS102, compared to hybrid waveguide switches and modulators with vertical taper and higher EO coefficients.

Original languageEnglish (US)
Article number213513
JournalApplied Physics Letters
Issue number21
StatePublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Hybrid electro-optic polymer/sol-gel waveguide directional coupler switches'. Together they form a unique fingerprint.

Cite this