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Improved method of measuring loss and phase shifts in waveguide devices

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2 Author(s)
Henning, I.D. ; British Telecom Research Laboratories, Ipswich, UK ; Rodgers, P.M.

The letter presents two novel methods, based on Fabry-Perot interference, for the characterisation of passive and active waveguide devices. Loss measurements have been made on passive devices using a distributed feedback laser as a frequency-tunable source. Simultaneous measurement of phase shift and loss are obtained for a phase modulator by using the electro-optic effect.

Published in:

Electronics Letters  (Volume:23 ,  Issue: 23 )