A novel nondestructive propagation-loss measurement technique for single-mode waveguides is demonstrated. The method calculates the total propagation-loss coefficient from the measured ratio of the retroreflected and transmitted light from the waveguide and is independent of the coupling efficiency of the input light. A surface-wave transducer is utilized as an acousto-optic modulator in a lock-in scheme to enhance the measurement ease and precision.
© 1987 Optical Society of America
Original Manuscript: July 14, 1987
Manuscript Accepted: August 26, 1987
Published: December 1, 1987
R. Arsenault, D. Gregoris, S. Woolven, and V. M. Ristic, "Waveguide propagation-loss measurement technique," Opt. Lett. 12, 1047-1049 (1987)