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Holey fiber mode-selective couplers.

Gaetano Bellanca, Nicolas Riesen, Alexander Argyros

|September 15, 2015

Summary

Directional mode coupling was achieved in asymmetric holey fiber couplers for the first time, showing spectral properties and improved tolerances. This advance enables dual-core polymer fiber for mode multiplexing applications.

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Area of Science:

Optics and Photonics
Materials Science

Background:

Mode coupling is crucial for optical communication.
Holey fibers offer unique light-guiding properties.

Purpose of the Study:

To demonstrate directional mode coupling in asymmetric holey fiber couplers.
To explore spectral characteristics and dimensional tolerances of these couplers.
To enable mode multiplexing using dual-core polymer holey fibers.

Main Methods:

Numerical simulations were performed to design the coupler.
A dual-core polymer holey fiber was fabricated using drilling and drawing.
Experimental measurements were conducted and compared with simulations.

Main Results:

Directional mode coupling was successfully demonstrated.
The fabricated couplers exhibited interesting spectral characteristics.
Increased dimensional tolerances were observed in the holey fiber mode couplers.

Conclusions:

Asymmetric holey fiber couplers are viable for directional mode coupling.
These couplers offer advantages in spectral properties and fabrication tolerances.
The technology supports LP(01) and LP(11) mode multiplexing.