| Authors: | P. Dumon, W. Bogaerts, D. Van Thourhout, R. Baets, P. Jaenen, S. Beckx, J. Wouters | | Title: | A nanophotonic 4x4 wavelength router in silicon-on-insulator | | Format: | National Conference Proceedings | | Publication date: | 11/2005 | | Journal/Conference/Book: | 6th UGent-FirW Doctoraatssymposium
| | Volume(Issue): | p.38 (paper nr. 27) | | Location: | Gent, Belgium | | Citations: | Look up on Google Scholar
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Abstract
We fabricated and packaged a very compact 4x4 wavelength router in Silicon-on-insulator. This device is for use in a 10 gigabit/s optical backplane interconnect based on tuneable lasers and wavelength routing. Fabrication was done using CMOS compatible processes, enabling volume fabrication. The router consists of a very compact arrayed waveguide grating using submicron waveguides and bend radii of just 3µm. This is achieved by exploiting the very high refractive index contrast. By applying a double etch scheme, the insertion loss of the arrayed waveguide grating has been reduced to 3.5dB for the best routing path. Vertical fibre couplers are used to interface to an standard eight-fibre array connector. The resulting total fibre-to-fibre insertion loss of the router is 12.5dB. The crosstalk level is still -12 to -14dB, which is within spec for the envisaged application. Related Research Topics
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