Optical waveguide intensity modulators based on a tunable electron density multiple quantum well structure
Zucker, J. E. ; Wegener, M. ; Jones, K. L. ; Chang, T. Y. ; Sauer, N. ; Chemla, D. S.
Woodbury, NY : American Institute of Physics (AIP)
Published 1990
Woodbury, NY : American Institute of Physics (AIP)
Published 1990
| ISSN: |
1077-3118
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
With a recently developed semiconductor heterostructure it has become possible to tune continuously the electron density in multiple quantum wells. Here we demonstrate the first electro-optic waveguide intensity modulators based on this concept. We achieve a 22 dB on/off ratio for 9 V applied at 1.54 μm wavelength in a rib waveguide electroabsorption modulator. Electrorefractive devices include a waveguide Mach–Zehnder interferometer with an active length 650 μm operating at 1.58 μm wavelength with 5.4 V half-wave voltage. We show that the operating voltage can be further reduced by operating the Mach–Zehnder modulators in push-pull configuration.
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| Type of Medium: |
Electronic Resource
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| URL: |