An optical fiber whose structure is similar to that of the PANDA fiber, but with two open channels in the place of the stress members, is investigated. Variations of the internal or external gas pressure permit tuning of the fiber birefringence (10−4 rad m−1 Pa−1) over a wide range, including sign reversal, and application as a pressure sensor.
© 1986 Optical Society of America
Original Manuscript: January 27, 1986
Manuscript Accepted: February 19, 1986
Published: May 1, 1986
H. M. Xie, K. Okamoto, Ph. Dabkiewicz, and R. Ulrich, "Side-hole fiber for fiber-optic pressure sensing," Opt. Lett. 11, 333-335 (1986)