. . "Optical waveguides." . . "Approximation." . . "Temperature effects." . . "Wave equations." . . "Optical coupling." . . "Mathematical models." . . "Feasibility analysis." . . "Pressure sensors." . . "Optical fibers." . . . . . . . . . . . . "Calculated coupling efficiency between an elliptical-core optical fiber and an optical waveguide over temperature"@en . . . . . . . . . . . . .