Integrated silicon-photonic module for generating widely tunable, narrow-line RF using injection-locked lasers

David W. Grund Jr.; Garrett J. Schneider; Garrett A. Ejzak; Janusz Murakowski; Shouyuan Shi; Dennis W. Prather

doi:10.1117/12.914467

28 February 2012 Integrated silicon-photonic module for generating widely tunable, narrow-line RF using injection-locked lasers

David W. Grund Jr., Garrett J. Schneider, Garrett A. Ejzak, Janusz Murakowski, Shouyuan Shi, Dennis W. Prather

Author Affiliations +

Proceedings Volume 8259, RF and Millimeter-Wave Photonics II; 825906 (2012) https://doi.org/10.1117/12.914467
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

We have developed a system for generating widely tunable, narrow-line RF signals from a pair of injection-locked lasers. This system is based on injection seeding one laser with a selectable high-order sideband obtained from a second laser that is phase modulated by a narrow-line, low-frequency RF reference oscillator. When these coherent optical outputs are mixed on a fast photodiode, RF output is obtained, with linewidth and phase noise characteristics that are limited by the reference oscillator. The RF output can be tuned over a wide range, in multiples of the reference frequency, and can be fine-tuned by tuning the reference oscillator. In this paper, we present the results of our efforts to develop an integrated version of this system, based on a silicon-photonic integrated circuit coupled to III-V semiconductor gain chips. We describe the fabrication process of the integrated module using heterogeneous integration techniques, and present preliminary results including two lasers operating simultaneously on a single silicon-photonic chip.

Citation Download Citation

David W. Grund Jr., Garrett J. Schneider, Garrett A. Ejzak, Janusz Murakowski, Shouyuan Shi, and Dennis W. Prather "Integrated silicon-photonic module for generating widely tunable, narrow-line RF using injection-locked lasers", Proc. SPIE 8259, RF and Millimeter-Wave Photonics II, 825906 (28 February 2012); https://doi.org/10.1117/12.914467

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