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Arrays of vertical-cavity electroabsorption modulators for parallel signal processing
Optics Express
|June 5, 2009
Summary
High-performance electroabsorption modulator (EAM) arrays were fabricated on a 4-inch wafer. These devices offer gigahertz modulation speeds and high contrast ratios, suitable for parallel signal processing.
Area of Science:
- Optoelectronics
- Semiconductor devices
- Photonics
Background:
- Vertical-cavity electroabsorption modulators (EAM) provide high modulation speeds and polarization insensitivity.
- Their suitability for parallel signal processing architectures makes them valuable for advanced applications.
Purpose of the Study:
- To present high-performance 2 x 128 and 2 x 64 EAM arrays.
- To demonstrate wafer-scale fabrication using optimized processes.
Main Methods:
- Fabrication of EAM arrays at 4-inch wafer-scale.
- Utilizing optimized fabrication and hybridisation techniques.
Main Results:
- Achieved contrast ratios of 20:1 with a 1 V voltage swing.
- Attained a maximum contrast ratio of 335:1 at 10 V bias.
- Demonstrated modulation frequencies exceeding 15 MHz.
Conclusions:
- The fabricated EAM arrays show excellent performance characteristics.
- These arrays are well-suited for efficient parallel optical signal processing architectures.
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