It is shown that losses and phase constants in the general class of 2-D bent hollow waveguides are expressed by only one normalized parameter including the core width and the bending radius. Numerical analysis is made to obtain losses and phase constants, and simple approximate formulas are presented for several lower-order modes with reasonable accuracy.
© 1981 Optical Society of America
Original Manuscript: July 9, 1981
Published: December 15, 1981
Mitsunobu Miyagi and Shojiro Kawakami, "Losses and phase constant changes caused by bends in the general class of hollow waveguides for the infrared," Appl. Opt. 20, 4221-4226 (1981)