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Linearized electro-optic racetrack modulator based on double injection method in silicon.

Roei Aviram Cohen, Ofer Amrani, Shlomo Ruschin

|April 4, 2015

Summary

This summary is machine-generated.

A novel racetrack-based optical modulator, FLAME (Finer Linearity Amplitude Modulation Element), enhances linearity using a Double Injection approach. This design achieves a high spurious-free dynamic range (SFDR) suitable for RF photonics.

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Area of Science:

Photonics
Optical Communications
Semiconductor Devices

Background:

Optical modulators are crucial components in modern communication systems.
Improving linearity and dynamic range in modulators is essential for high-performance links.
Existing modulators face challenges in achieving both high linearity and compact footprints.

Purpose of the Study:

To introduce and analyze a novel racetrack-based optical modulator named FLAME (Finer Linearity Amplitude Modulation Element).
To demonstrate a method for significantly enhancing modulator linearity.
To assess the modulator's suitability for large-scale integration in RF photonics.

Main Methods:

Utilizing a racetrack resonator design for amplitude modulation.
Implementing a Double Injection approach to improve linearity.
Theoretical analysis and simulation of the modulator's performance characteristics.

Main Results:

Achieved a theoretically large spurious-free dynamic range (SFDR) of 132dB·Hz(4/5).
The FLAME modulator operates at a low voltage of 2.5V.
The modulator exhibits a small footprint size of 100 × 50µm2 on a silicon platform.

Conclusions:

The FLAME modulator offers a significant improvement in linearity for optical links.
Its compact size, low operating voltage, and high SFDR make it highly suitable for silicon photonics.
FLAME presents a promising solution for advanced RF photonic applications requiring high-performance modulators.