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Single-mode-fiber birefringent filters.

M Johnson¹

¹IBM Thomas 1. Watson Research Center, Yorktown Heights, New York 10598, USA.

|August 21, 2009

Summary

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Optical birefringence in single-mode fibers can create tunable wavelength-dependent filters. Varying stress on the fiber allows for precise control over the filter

Area of Science:

Optics and Photonics
Materials Science

Background:

Single-mode optical fibers possess inherent or induced birefringence.
Birefringence affects light propagation based on polarization and wavelength.

Purpose of the Study:

To propose and investigate the use of optical birefringence in single-mode fibers for creating wavelength-dependent filters.
To explore methods for tuning the performance of these filters.

Main Methods:

Utilizing natural birefringence arising from fiber manufacturing.
Inducing birefringence through external stresses applied to the fiber.
Analyzing the relationship between applied stress and filter characteristics.

Main Results:

Demonstrated that optical birefringence can be effectively used to construct wavelength-dependent filters.

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Last Updated: Jun 20, 2026

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Showcased that induced birefringence allows for dynamic tuning of the filter's transfer function by varying external stresses.

Conclusions:

Optical birefringence in single-mode fibers is a viable method for developing tunable optical filters.
The ability to tune filters via stress offers a practical approach for optical signal processing applications.