High Performance QCSE Phase Modulator for the 1.5-1.55μm Fibre Band

J. B.D. Soolec, H. K. Tsang, I. H. White, H. P. Leblanc, R. Bhat, M. A. Koza

Research output: Contribution to journalArticlepeer-review


A low drive voltage, InP-based waveguide optical phase modulator for the 1.5-1.55μm fibre band is reported. Vn values of 3.5Vmm at 1.5μm wavelength and 4.6V mm at 1.55μm are obtained. No change in the transmitted light intensity is discernible at 1.55μm, with just 0.27dBmm-1 modulation accompanying a 0-5 V voltage swing at 1.5μm. An 850μm long device had a bandwidth of 2.8GHz, limited by parasitic bond-pad capacitance.

Original languageEnglish
Pages (from-to)1421-1423
Number of pages3
JournalElectronics Letters
Issue number17
Publication statusPublished - 1 Aug 1990


  • Optical modulation
  • Waveguides

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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