Most current RF photonic systems are made from individually packaged devices that are interconnected with fiber-optic cables. In order to reduce size and weight and make the coherent receiver suitable for use in smaller airborne and mobile platforms, optical and opto-electronic components are packaged within a common enclosure where light routing is performed by micro-optics. A printed circuit board (PCB) is included within the module. It comprises a micro-processor to control and monitor the laser, the FBGs and thermo-electric coolers to ensure a robust operation over time and fluctuating environmental conditions. The module including the PCB, laser, modulators, optics, optical filters and balanced detector has a size of 89 x 64 x 32 mm3.
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S. Ayotte, M. Morin, P. Deladurantaye, G. Bilodeau, L.-P. Perron, F. Costin, A. Babin, G. Brochu, J. Blanchet-Létourneau, C.-A. Davidson, D. D'Amato, É. Girard-Deschênes, P. Chrétien, M. Laplante, M. Drolet, "Compact optical coherent receiver for avionics applications," Proc. SPIE 10531, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XI, 105311A (23 February 2018);