Abstract
The insertion loss, L = −10 log T, is an important characteristic of any optical waveguide device; it is especially important for resonator devices.1 The small losses in diffused LiNbO3 strip guides have been difficult to measure because of the poor reproducibility of input/output coupling with prisms or polished end-faces. Cleaving the end-faces of properly oriented and sufficiently thin LiNbO3 substrates is a quick and convenient means for preparing reproducible surfaces.2
© 1978 Optical Society of America
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