Improved method of measuring loss and phase shifts in waveguide devices |
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Authors: | Henning ID Rodgers PM |
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Affiliation: | British Telecom Research Laboratories, Ipswich, UK; |
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Abstract: | 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. |
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