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Electro-optic modulator based on a photonic crystal slab with electro-optic polymer cladding
Optics Express
|April 11, 2014
Summary
This study presents a novel electro-optic (EO) polymer-clad photonic crystal (PC) modulator. It achieves flexible designs for low-voltage (0.2 V) or high-bandwidth (62 GHz) modulation.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Photonic crystal (PC) slabs offer unique light manipulation properties.
- Electro-optic (EO) polymers provide fast electro-optic modulation capabilities.
- Integrating PC slabs with EO polymers can lead to advanced modulators.
Purpose of the Study:
- To design and investigate a novel hybrid modulator.
- To explore the modulation characteristics of a PC slab with EO polymer cladding.
- To demonstrate the potential for low-voltage or high-bandwidth operation.
Main Methods:
- Finite-difference time-domain (FDTD) method for transmission spectra calculation.
- Analysis of band structure and guided mode resonance field distribution.
- Simulation of modulation voltage and bandwidth.
Main Results:
- The hybrid modulator design enables flexible modulation characteristics.
- Achieved low-voltage modulation down to 0.2 V.
- Demonstrated high-bandwidth modulation up to 62 GHz.
Conclusions:
- The proposed shallow-etched PC slab modulator with EO polymer cladding is a promising device.
- Offers a pathway to flexible, high-performance optical modulators.
- Suitable for applications requiring either low driving voltage or high modulation speed.
