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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Wide-band self-collimation in a low-refractive-index hexagonal lattice.

Chun Xia, Stephen M Kuebler, Noel P Martinez

|April 30, 2021

Summary

This summary is machine-generated.

This study demonstrates wide-angle, broadband self-collimation (SC) in a hexagonal photonic crystal (PhC). The PhC guides near-infrared light without diffractive spreading, even at oblique angles.

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Area of Science:

Photonics
Materials Science
Optics

Background:

Photonic crystals (PhCs) offer unique light manipulation properties.
Self-collimation (SC) enables light propagation without diffraction.

Purpose of the Study:

To demonstrate wide-angle, broadband self-collimation in a hexagonal PhC.
To investigate SC in a low-refractive-index photopolymer fabricated by multiphoton lithography.

Main Methods:

Fabrication of a hexagonal PhC using multiphoton lithography.
Optical characterization of the PhC's self-collimation properties.
Numerical simulations to corroborate experimental results.

Main Results:

Demonstrated wide-angle, broadband self-collimation (SC) in a hexagonal PhC.
Achieved SC for near-infrared wavelengths from 1360 to 1610 nm.
Observed SC even at high oblique angles of light incidence.

Conclusions:

Hexagonal PhCs in low-refractive-index materials can achieve efficient SC.
Multiphoton lithography is a viable technique for fabricating such PhCs.
The demonstrated SC has potential applications in integrated optics and optical communication.