The waveguide characteristics of metal-clad ridge-waveguide (MCRW) lasers are analyzed by the equivalent current theory associated with the effective index method. The enhanced lateral mode confinement, and increased mode loss are calculated for different metals. All these results are in analytic form, which has not been published before and makes us easy to get the waveguide characteristics calculation. The optimum design of MCRW lasers is discussed by using these analytic formulas.
Tong Yu, Tong Yu,
"New analytic formulas for the design of metal-clad ridge-waveguide lasers", Proc. SPIE 1580, Fiber Optic Components and Reliability, (1 February 1992); doi: 10.1117/12.135385; https://doi.org/10.1117/12.135385