Minimum loss condition of a bent rectangular hollow waveguide

Abstract

The leakage loss of a hollow dielectric waveguide is analyzed analytically and numerically. A minimum loss condition of a bent rectangular hollow waveguide is derived in terms of the refractive index of the cladding using the perturbation method. The validity of the derived minimum loss condition is confirmed by the beam‐propagation method. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2901–2902, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24761

Semivector Finite-Difference Formula for the Analysis of a Step-Index Waveguide With a Tilted Interface

“…It is found that the loss tends to decrease as is decreased, since the core area becomes larger. To interpret the behavior of the loss in more detail, we should recall the loss properties in a hollow slab waveguide, which has a minimum loss condition of for the transverse-magnetic (TM) mode [11]. In Fig.…”