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On-Chip Optical Nonreciprocity Using an Active Microcavity.

Xiaoshun Jiang¹, Chao Yang¹, Hongya Wu¹

¹National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, and School of Physics, Nanjing University, Nanjing 210093, China.

Scientific Reports

|December 14, 2016

Summary

This summary is machine-generated.

Researchers developed a novel on-chip optical nonreciprocity device using a single microcavity. This compact solution offers excellent light isolation for integrated photonic networks, operating across a wide power range.

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Area of Science:

Photonics and Optical Engineering
Integrated Optics
Nonlinear Optics

Background:

Optically nonreciprocal devices are crucial for integrated photonic circuits in optical communications and information processing.
Achieving on-chip optical nonreciprocity with high performance has been a significant challenge.

Purpose of the Study:

To demonstrate a compact and efficient on-chip optical nonreciprocity device.
To achieve excellent light isolation and one-way transport in telecommunication wavelengths.

Main Methods:

Exploration of gain-saturation nonlinearity.
Utilization of a single toroid microcavity.
Demonstration compatible with complementary metal-oxide-semiconductor (CMOS) processes.

Main Results:

Achieved on-chip optical nonreciprocity with excellent isolation performance.
Device operates effectively across a wide input power range (microwatts down to nanowatts).
Demonstrated one-way light transport with low insertion loss.

Conclusions:

The developed device offers a promising solution for integrated nanophotonic networks.
Its compact, simple, and CMOS-compatible nature makes it a critical building block.
Superior performance in isolation and low loss enhances its applicability in optical communications.