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17 February 2009 High speed analog-to-digital conversion with silicon photonics
C. W. Holzwarth; R. Amatya; M. Araghchini; J. Birge; H. Byun; J. Chen; M. Dahlem; N. A. DiLello; F. Gan; J. L. Hoyt; E. P. Ippen; F. X. Kärtner; A. Khilo; J. Kim; M. Kim; A. Motamedi; J. S. Orcutt; M. Park; M. Perrott; M. A. Popovic; R. J. Ram; H. I. Smith; G. R. Zhou; S. J. Spector; T. M. Lyszczarz; M. W. Geis; D. M. Lennon; J. U. Yoon; M. E. Grein; R. T. Schulein; S. Frolov; A. Hanjani; J. Shmulovich
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Proceedings Volume 7220, Silicon Photonics IV; 72200B (2009) https://doi.org/10.1117/12.808952
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States
Abstract
Sampling rates of high-performance electronic analog-to-digital converters (ADC) are fundamentally limited by the timing jitter of the electronic clock. This limit is overcome in photonic ADC's by taking advantage of the ultra-low timing jitter of femtosecond lasers. We have developed designs and strategies for a photonic ADC that is capable of 40 GSa/s at a resolution of 8 bits. This system requires a femtosecond laser with a repetition rate of 2 GHz and timing jitter less than 20 fs. In addition to a femtosecond laser this system calls for the integration of a number of photonic components including: a broadband modulator, optical filter banks, and photodetectors. Using silicon-on-insulator (SOI) as the platform we have fabricated these individual components. The silicon optical modulator is based on a Mach-Zehnder interferometer architecture and achieves a VπL of 2 Vcm. The filter banks comprise 40 second-order microring-resonator filters with a channel spacing of 80 GHz. For the photodetectors we are exploring ion-bombarded silicon waveguide detectors and germanium films epitaxially grown on silicon utilizing a process that minimizes the defect density.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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C. W. Holzwarth, C. W. Holzwarth, R. Amatya, R. Amatya, M. Araghchini, M. Araghchini, J. Birge, J. Birge, H. Byun, H. Byun, J. Chen, J. Chen, M. Dahlem, M. Dahlem, N. A. DiLello, N. A. DiLello, F. Gan, F. Gan, J. L. Hoyt, J. L. Hoyt, E. P. Ippen, E. P. Ippen, F. X. Kärtner, F. X. Kärtner, A. Khilo, A. Khilo, J. Kim, J. Kim, M. Kim, M. Kim, A. Motamedi, A. Motamedi, J. S. Orcutt, J. S. Orcutt, M. Park, M. Park, M. Perrott, M. Perrott, M. A. Popovic, M. A. Popovic, R. J. Ram, R. J. Ram, H. I. Smith, H. I. Smith, G. R. Zhou, G. R. Zhou, S. J. Spector, S. J. Spector, T. M. Lyszczarz, T. M. Lyszczarz, M. W. Geis, M. W. Geis, D. M. Lennon, D. M. Lennon, J. U. Yoon, J. U. Yoon, M. E. Grein, M. E. Grein, R. T. Schulein, R. T. Schulein, S. Frolov, S. Frolov, A. Hanjani, A. Hanjani, J. Shmulovich, J. Shmulovich, } "High speed analog-to-digital conversion with silicon photonics", Proc. SPIE 7220, Silicon Photonics IV, 72200B (17 February 2009); doi: 10.1117/12.808952; https://doi.org/10.1117/12.808952
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