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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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Integrated Optical Modulator Based on Transition between Photonic Bands.

Alperen Govdeli¹, Murat Can Sarihan¹, Utku Karaca¹

¹Electrical and Electronics Engineering Department, Middle East Technical University, Ankara, Turkey.

Scientific Reports

|January 28, 2018

Summary

This summary is machine-generated.

A novel optical modulator uses a photonic crystal slab for efficient, low-voltage operation (~1V). This design reduces size and power consumption for integrated photonic devices.

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Area of Science:

Photonics
Integrated Optics
Materials Science

Background:

Optical modulators are crucial components in photonic integrated circuits.
Existing modulators often face trade-offs between size, power consumption, and operational voltage.
Need for compact and energy-efficient modulation solutions is increasing.

Purpose of the Study:

To design a novel, area-efficient optical modulator with low operation voltage.
To leverage plasma dispersion effect in a photonic crystal slab for enhanced modulation.
To reduce the physical footprint and power requirements of optical modulators.

Main Methods:

Design of an integrated Mach-Zehnder Interferometer (MZI) modulator.
Utilizing a photonic crystal slab as the phase shifter element.
Exploiting the plasma dispersion effect for a large refractive index change (Δn ≈ 4).

Main Results:

Achieved a high index change enabling a π-phase shift with a short phase shifter length (~5 µm).
Demonstrated low operational voltage requirement of approximately 1V.
The design is implemented on a silicon-on-insulator (SOI) platform.

Conclusions:

The proposed modulator design offers significant reductions in size and power consumption.
Low voltage and short interaction length minimize optical losses.
This technology presents a promising avenue for cost-effective and compact photonic systems.