The variation of transmitted power through tapered coaxial couplers is presented as a function of the surrounding refractive index. This response allows us to select suitable cladding materials for the tapers that would desensitize their performance to environmental changes. Further, the use of tapers as refractive-index sensors is outlined.
© 1986 Optical Society of America
Original Manuscript: December 2, 1985
Manuscript Accepted: January 28, 1986
Published: April 1, 1986
A. C. Boucouvalas and G. Georgiou, "External refractive-index response of tapered coaxial couplers," Opt. Lett. 11, 257-259 (1986)