Silica/electro-optic polymer optical modulator with integrated antenna for microwave receiving

Oscar D. Herrera, Kyung Jo Kim, Ram Voorakaranam, Roland Himmelhuber, Shiyi Wang, Veysi Demir, Qiwen Zhan, Li Li, Robert A. Norwood, Robert L. Nelson, Jingdong Luo, Alex K.Y. Jen, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


A silica/electro-optic (EO) polymer phase modulator is proposed for microwave radiation receiver with the use of a bowtie antenna. Waveguide design optimization is presented for a waveguide with an EO polymer core and silica/sol-gel cladding. Electrode effects on the insertion loss and poling efficiency are also analyzed and conditions for low-loss and high poling efficiency established. The bowtie antenna is simulated and shows a broadband response with a maximum at 5 GHz and a 3 dB-bandwidth of approximately 12 GHz. A fiber splicing technique is presented that reduces coupling loss between SMF-28 and the waveguide. Experimental results for a fabricated device with microwave-response between 10-14 GHz are shown with carrier to first sideband intensity difference of up to -36 dB.

Original languageEnglish (US)
Article number6787019
Pages (from-to)3861-3867
Number of pages7
JournalJournal of Lightwave Technology
Issue number20
StatePublished - Oct 15 2014


  • Electrooptic modulators
  • microwave receivers
  • optical polymers
  • optical waveguides

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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