Mirror Quality and the Performance of Reflective

Date
2004-07
Authors
Temkin, H.
Gale, R.
Frisbie, S.
Linn, J.
Gorbanov, V.
Grave de Peralta, L.
Bernussi, A.
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electronics and Electrical Engineers
Abstract

This paper discusses an investigation of the effects of mirror quality on the performance of reflecting arrayed-waveguide- grating multiplexers. Using specially designed external mirrors as external reflectors, the optimum flatness and microroughness of the reflecting surface are determined. The experiments discussed in the paper indicate that a reflecting-surface flatness of 4 is sufficient to obtain high-performance reflective multiplexers. Extrinsic mirror-related phase and intensity errors were found to be negligible for surfaces polished with diamond lapping films with a grain size smaller than 1 m. These experimental results were found to be in excellent agreement with simulations based on mirror-related changes in the waveguide-grating-length increment.

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Citation
Bernussi, A.A.; de Peralta, L.G.; Gorbounov, V.; Linn, J.A.; Frisbie, S.; Gale, R.; Temkin, H.; , "Mirror quality and the performance of reflective arrayed-waveguide grating multiplexers," LightwaveTechnology, Journal of , vol.22, no.7, pp. 1828- 1832, July 2004 doi: 10.1109/JLT.2004.831196
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