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Tandem resonator reflectance modulator

  • US 5,345,328 A
  • Filed: 08/12/1992
  • Issued: 09/06/1994
  • Est. Priority Date: 08/12/1992
  • Status: Expired due to Fees
First Claim
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1. A wide band optical modulator comprising:

  • a substrate;

    tandem Fabry-Perot resonators epitaxially grown on said substrate, comprising;

    three mirrors, M1, M2, and M3, each mirror having a high reflectance zone centered at a Bragg wavelength λ

    B, M3 being adjacent said substrate; and

    two cavities, C1 and C2, spaced from each other by M2 in a stack grown on M3, M1 being on top of said stack, the absorption of C2 being changed relative to the absorption of C1 by an applied electric field,wherein light reflecting from M1 and M3 is in phase and light reflecting from M2 is out of phase with light from M1 and M3.

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