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16 March 2015 Comparison of photonic integrated circuits for millimeter-wave signal generation between dual-wavelength sources for optical heterodyning and pulsed mode-locked lasers
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Abstract
A comparative study of two different Photonic Integrated Circuits (PICs) structures for continuous-wave generation of millimeter-wave (MMW) signals is presented, each using a different approach. One approach is optical heterodyning, using an integrated dual-wavelength laser source based on Arrayed Waveguide Grating. The other is based on ModeLocked Laser Diodes (MLLDs). A novel building block -Multimode Interference Reflectors (MIRs) – is used to integrate on-chip both structures, without need of cleaved facets to define the laser cavity. This fact enables us to locate any of these structures at any location within the photonic chip. As will be shown, the MLLD structure provides a simple source for low frequencies. Higher frequencies are easier to achieve by optical heterodyne. Both types of structures have been fabricated on a generic foundry in a commercial MPW PIC technology.
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Guillermo Carpintero , Carlos Gordon, Robinson Guzman , Xaveer Leijtens, Frédéric Van Dijk, Gaël Kervella, Martyn J. Fice, Katarzyna Balakier, and Cyril C. Renaud "Comparison of photonic integrated circuits for millimeter-wave signal generation between dual-wavelength sources for optical heterodyning and pulsed mode-locked lasers", Proc. SPIE 9357, Physics and Simulation of Optoelectronic Devices XXIII, 935719 (16 March 2015); https://doi.org/10.1117/12.2080526
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