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Nonunity permeability in metamaterial-based GaInAsP/InP multimode interferometers.

T Amemiya¹, T Shindo, D Takahashi

¹Quantum Nanoelectronics Research Center, Tokyo Institute of Technology, Tokyo 152-8552, Japan. amemiya.t.ab@m.titech.ac.jp

|June 21, 2011

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We integrated indium phosphide (InP) optical multimode interferometers with split-ring resonator (SRR) metamaterials. This combination enables magnetic resonance at 1.5 μm, paving the way for novel semiconductor photonic devices.

Area of Science:

Photonics and Materials Science
Optoelectronics
Metamaterials Research

Background:

Optical multimode interferometers (MMIs) are key components in photonic integrated circuits.
Metamaterials offer unique electromagnetic properties not found in natural materials.
Integrating metamaterials with semiconductor platforms can lead to advanced optical functionalities.

Purpose of the Study:

To demonstrate an indium phosphide (InP)-based optical multimode interferometer (MMI) integrated with split-ring resonator (SRR) metamaterials.
To investigate the optical properties of the combined MMI-metamaterial structure at optical fiber communication wavelengths.
To explore the potential of nonunity permeability materials in semiconductor-based photonic devices.

Main Methods:

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Fabrication of an InP-based MMI.

Integration of an array of minute split-ring resonators (SRRs) onto the MMI.

Optical characterization of the device at a wavelength of 1.5 μm.

Analysis of magnetic resonance and relative permeability of the metamaterial.

Main Results:

The MMI device operated effectively at a wavelength of 1.5 μm.
Magnetic resonance was observed between the SRR metamaterial and light at 1.5 μm.
The relative permeability of the metamaterial reached 2.4 around 1.5 μm.

Conclusions:

The integration of SRR metamaterials with InP MMIs is feasible.
The demonstrated structure exhibits magnetic resonance at communication wavelengths.
This work highlights the potential for using novel materials with nonunity permeability in semiconductor photonic device design.