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Minimum Loss Condition of a Bent Rectangular Tube Waveguide

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4 Author(s)
Junji Yamauchi ; Faculty of Science and Engineering, Hosei University, Tokyo, Japan ; Tomohiro Nakano ; Seiji Harada ; Hisamatsu Nakano

The leakage loss of a tube dielectric waveguide is analyzed analytically and numerically. A minimum loss condition of a bent rectangular tube waveguide is derived in terms of the ratio of refractive index of the tube to the other region using the transverse transmission-line model. The validity of the derived minimum loss condition is confirmed by the two- and three-dimensional beam-propagation methods.

Published in:

IEEE Photonics Technology Letters  (Volume:23 ,  Issue: 16 )