Design and Fabrication of Low-Insertion-Loss and Low-Crosstalk Broadband  $2\times 2$ Mach–Zehnder Silicon Photonic Switches

Dupuis, N.; Lee, Benjamin G.; Rylyakov, Alexander V.; Kuchta, Daniel M.; Baks, Christian; Orcutt, Jason S.; Gill, Douglas M.; Green, William M. J.; Schow, Clint L.

doi:10.1109/jlt.2015.2446463

Cited by 79 publications

(30 citation statements)

References 28 publications

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“…Other notable demonstrations of integrated optical switches are [21,22,23,24,25,26,27,28,29,30,31,32,33,34,35]. Wavelength-selective switches with single wavelength connectivity based on an Arrayed Waveguide Grating Router (AWGR) [36], cascaded microring crossbar switch [37], modular switch and select architecture [38], switch with multi-casting functionality [39] have been reported.…”

Section: Optical Switchesmentioning

confidence: 99%

Multi-wavelength selective crossbar switch

Khope

Saeidi

et al. 2019

Opt. Express

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When I started out at UC Santa Barbara as a PhD student in 2015, there was no funding until the AIM project proposal got accepted. Without funding no work gets done, so first I am grateful to Prof. Rod Alferness for funding me for the first year and Prof. John Bowers for funding me for the rest of my PhD. To John, thanks for giving me complete freedom at work without which I could not have explored so many different areas in research. I enjoyed our conversation in the monthly meetings with Rod, John and Adel. For the first few months of my PhD I spent a lot of time with Adel doing a literature survey, it was an exciting journey in a new field. To Adel, thanks for filtering out the unsound ideas and helping me frame my thoughts. I enjoyed our white board discussions. To Roger, Clint, Takako and Andy at the Datacom meetings for discussions and helpful feedback. To Tin, for the fun we had at the New York Training conference. To Alex, Warren, Eric and Andy for the excellent office environment. To Alex, for inspiring me to get Scuba certified and also for tips on cooking Thai cuisine. To Aranya, for being my climbing buddy. To Sean, Simran Lawrence, Wilson and many others, for the fun time we had at UCSB badminton intramural. To Chirag, for providing helpful advice when needed. Thanks to Nicolas, Geza, Christos, Sarat, Aditya for helpful discussions. I would also like to thank Minh, Tony, Paolo, Yuan and Alan for their helpful advice. Special Thanks to Songtao for help with high speed measurements. Thanks to my Pappa, Mamma and Sairaj for the support during my PhD and for recharge time in India. Finally I would also thank Jeremiah Hebding, Brett Attaway, and SUNY for their foundry services. v

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Section: Optical Switchesmentioning

confidence: 99%

Multi-wavelength selective crossbar switch

Khope

Saeidi

et al. 2019

Opt. Express

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“…On SOI platforms, carrier injection phase shifters 1 – 6 have similar insertion losses for a π phase shift. In the comparisons, each phase shifter in the two switches is assumed to be 250 μ m long with an optical field confinement factor of 0.7, being similar to a demonstrated design 4 . According to Soref’s equations 7 , 10 , such a phase shifter design requires a carrier density change of 1.162 × 10 18 (for both electrons and holes) for a π phase shift in optical C-band, and correspondingly its free-carrier absorption induced insertion loss translates into α = 0.8613.…”

Section: Resultsmentioning

confidence: 99%

High-performance silicon photonic tri-state switch based on balanced nested Mach-Zehnder interferometer

Zheng

Celo

Mehrvar

et al. 2017

Sci Rep

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AbsatrctThis work proposes a novel silicon photonic tri-state (cross/bar/blocking) switch, featuring high-speed switching, broadband operation, and crosstalk-free performance. The switch is designed based on a 2 × 2 balanced nested Mach-Zehnder interferometer structure with carrier injection phase tuning. As compared to silicon photonic dual-state (cross/bar) switches based on Mach-Zehnder interferometers with carrier injection phase tuning, the proposed switch not only has better performance in cross/bar switching but also provides an extra blocking state. The unique blocking state has a great advantage in applications of N × N switch fabrics, where idle switching elements in the fabrics can be configured to the blocking state for crosstalk suppression. According to our numerical experiments on a fully loaded 8 × 8 dilated Banyan switch fabric, the worst output crosstalk of the 8 × 8 switch can be dramatically suppressed by more than 50 dB, by assigning the blocking state to idle switching elements in the fabric. The results of this work can extend the functionality of silicon photonic switches and significantly improve the performance of on-chip N × N photonic switching technologies.

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“…Their reconfiguration time, however, is of the order of tens of microseconds which is not suitable for short lived connections that are common in data centers [20]. Silicon-based switches have been developed that are capable of reconfiguration times in the order of nanoseconds [21], but these currently do not scale to a sufficiently high port count with current technology.…”

Section: A Enabling Optical Technologiesmentioning

confidence: 99%

AgileDCN: An Agile Reconfigurable Optical Data Center Network Architecture

Barry²,

Kilper

et al. 2020

J. Lightwave Technol.

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This paper presents a detailed examination of a novel data center network (DCN) that can satisfy the high capacity and low latency requirements of modern cloud computing applications. This reconfigurable architecture called AgileDCN uses fastswitching optical components with a centralized control function and workload scheduler. By providing a highly flexible optical network fabric between server racks, very high network efficiencies can be achieved even under imbalanced loading patterns. Our simulation results show that, at high (70%) loads, TCP flow completion times in the AgileDCN are significantly lower than in an equivalent electronic leaf-spine network.

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Design and Fabrication of Low-Insertion-Loss and Low-Crosstalk Broadband $2\times 2$ Mach–Zehnder Silicon Photonic Switches

Cited by 79 publications

References 28 publications

Multi-wavelength selective crossbar switch

Multi-wavelength selective crossbar switch

High-performance silicon photonic tri-state switch based on balanced nested Mach-Zehnder interferometer

AgileDCN: An Agile Reconfigurable Optical Data Center Network Architecture

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