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Low-voltage electro-absorption optical modulator based on slow-light Bragg reflector waveguide
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10.1063/1.4789533
/content/aip/journal/apl/102/3/10.1063/1.4789533
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/3/10.1063/1.4789533
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A schematic cross-section view of the slow-light Bragg reflector waveguide modulator.

Image of FIG. 2.
FIG. 2.

Fabrication process: (a) resist patterning by lithography; (b) dry-etching to form the waveguide structure; (c) resist patterning by lithography; (d) dry-etching to form the coupling and out-coupling regions; (e) polymer patterning by lithography; (f) p- and n-type electrodes deposition and lift-off; (g) device completion after high-reflectivity gold mirror deposition; (h) lensed-fiber coupling.

Image of FIG. 3.
FIG. 3.

(a) Top-view photos of the fabricated devices: 20 μm long modulator (left), and 50 μm long modulator (right); (b) Measured near-field patterns at different bias voltages.

Image of FIG. 4.
FIG. 4.

Measured wavelength dependence and calculation of group index for TE-polarized input.

Image of FIG. 5.
FIG. 5.

Intensity versus bias voltage of a 50 μm device for different input wavelengths.

Image of FIG. 6.
FIG. 6.

Intensity versus bias voltage for devices with different lengths at the wavelength of 965 nm.

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/content/aip/journal/apl/102/3/10.1063/1.4789533
2013-01-25
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Low-voltage electro-absorption optical modulator based on slow-light Bragg reflector waveguide
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/3/10.1063/1.4789533
10.1063/1.4789533
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