12.6 CONCLUSION
In conclusion, we have demonstrated the distinctive polarization and wave-
length-selective properties of optical CLPGs and intermediate-period gratings
that make them useful as sensors, filters, and polarizers. We have also discussed
the desirability of chiral short-period gratings as lasing sources and discussed
progress towards this goal. Because of the flexible method of fabrication, which
does not require photosensitive glass, chiral fiber gratings can be produced to
perform a wide array of functions over a broad wavelength range including IR
and THz.
ACKNOWLEDGMENTS
We thank V. Churikov, G. Zhang, C. Draper, N. Chao, J. Singer, and D.
Neugroschl for help in preparing twisted fibers. This work was supported by the
U.S. Department ...