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11:08
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Strong electro-optical modulation enhancement in a slow wave corrugated waveguide
A Brimont1, P Sanchis, J Martí
1Valencia Nanophotonics Technology Center, Universidad Politécnica de Valencia Camino de Vera, s/n, 46022 Valencia, Spain. abrimont@ntc.upv.es
Optics Express
|May 26, 2009
Summary
This study demonstrates enhanced slow wave modulation in corrugated waveguides compared to conventional ones. The improved design offers efficient modulation with low losses and high bandwidth for optical devices.
Area of Science:
- Photonics and Waveguide Technology
- Semiconductor Device Physics
Background:
- Conventional rib waveguides are essential components in integrated photonics.
- Modulation enhancement is crucial for high-performance optical devices.
- Reverse biased pn junctions offer tunable optical properties.
Purpose of the Study:
- To model and characterize slow wave modulation enhancement in a corrugated rib waveguide.
- To compare the performance of corrugated versus conventional rib waveguides.
- To evaluate the impact of reverse bias on effective index and modulation efficiency.
Main Methods:
- Utilized electromagnetic modeling to simulate waveguide structures.
- Analyzed effective index changes under varying reverse bias voltages (0V to -10V).
- Calculated modulation performance for group velocities from 0.02c to 0.15c.
Main Results:
- Significant slow wave modulation enhancement was observed in the corrugated waveguide.
- Achieved interaction lengths < 750 micrometers and insertion losses < 3dB for voltages between -8V and -10V.
- Projected electrical modulation bandwidth exceeding 10 GHz.
Conclusions:
- Corrugated rib waveguides offer superior modulation performance compared to conventional designs.
- The proposed device enables efficient optical modulation with practical parameters.
- High bandwidth modulation is achievable for integrated photonic applications.
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