Demonstration of Error Free Operation Up To 32 Gb/s From a CMOS Integrated Monolithic Nano-Photonic Transmitter

Gill, Douglas M.; Xiong, Chi; Proesel, Jonathan E.; Rosenberg, J.J.; Orcutt, Jason S.; Khater, Marwan; Ellis-Monaghan, John; Viens, D.; Vlasov, Yurii A.; Haensch, Wilfried; Green, William M. J.

doi:10.1364/cleo_si.2015.stu4f.3

Cited by 6 publications

(16 citation statements)

References 4 publications

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“…6 In recent years, the wavelength range supported by group IV integrated photonics devices has been extended to longer wavelengths with waveguides, detectors and modulators working in between 2-3 µm 7,8 . With Si-based lasers at hand, high volume applications like chip-to-chip optical interconnects within supercomputers, switches or high-performance servers 9 as well as consumable chips with sensors for point-of-care diagnostics 10,11 would greatly benefit from a fully functional CMOS compatible PIC technology. 12 Moreover, it will allow for the integration of lasers on the same Si chip and thus for the embedding of photonic architectures into Si microtechnology.…”

Section: Introductionmentioning

confidence: 99%

Optically Pumped GeSn Microdisk Lasers on Si

et al. 2016

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The strong correlation between advancing the performance of Si microelectronics and their demand of low power consumption requires new ways of data communication. Photonic circuits on Si are already highly developed except for an eligible on-chip laser source integrated monolithically. The recent demonstration of an optically pumped waveguide laser made from the Si-congruent GeSn alloy, monolithical laser integration has taken a big step forward on the way to an all-inclusive nanophotonic platform in CMOS. We present group IV microdisk lasers with significant improvements in lasing temperature and lasing threshold compared to the previously reported nonundercut Fabry−Perot type lasers. Lasing is observed up to 130 K with optical excitation density threshold of 220 kW/cm 2 at 50 K. Additionally the influence of strain relaxation on the band structure of undercut resonators is discussed and allows the proof of laser emission for a just direct Ge 0.915 Sn 0.085 alloy where Γ and L valleys have the same energies. Moreover, the observed cavity modes are identified and modeled.

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Section: Introductionmentioning

confidence: 99%

Optically Pumped GeSn Microdisk Lasers on Si

et al. 2016

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“…6 for E = 2 eV. For this case, modes β (1) and β (2) possess a constant real propagation constant. The imaginary parts of these modes separate from each other for κ = 0 and therefore have no EP.…”

Section: Dispersion and Fieldsmentioning

confidence: 89%

“…Before the EP, all modes show unchanging P z along the propagation direction. Beyond the EP, P z drastically increases for β (1) and β (3) , and diminishes for β (0) and β (2) .…”

Section: Dispersion and Fieldsmentioning

confidence: 97%

“…The β (0) -branch has the largest propagation constant and at κ = 0 corresponds to the m = 0 mode β 0 . The degenerate pair β ±1 become β (1) and β (2) for κ = 0. Similarly, the degenerate pair β ±2 become β (3) and β (4) for κ = 0.…”

Section: Dispersion and Fieldsmentioning

confidence: 99%

“…Similarly, the degenerate pair β ±2 become β (3) and β (4) for κ = 0. As κ increases, the real(β) of degenerate modes separate from one another (i.e., β (1) from β (2) , β (3) from β (4) ) and at κ = 0.05, β (0) and β (1) reach an EP and real(β) coalesce. β (2) and β (3) form a similar pair and coalesce at an EP at κ = 0.13.…”

Section: Dispersion and Fieldsmentioning

confidence: 99%

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Towards nanoscale multiplexing with parity-time-symmetric plasmonic coaxial waveguides

Alaeian

Baum

Janković³

et al. 2016

Phys. Rev. B

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We theoretically investigate a nanoscale mode-division multiplexing scheme based on parity-time (PT ) symmetric coaxial plasmonic waveguides. Coaxial waveguides support paired degenerate modes corresponding to distinct orbital angular momentum states. PT symmetric inclusions of gain and loss break the degeneracy of the paired modes and create new hybrid modes without orbital angular momentum. This process can be made thresholdless by matching the mode order with the number of gain and loss sections within the coaxial ring. Using both a Hamiltonian formulation and degenerate perturbation theory, we show how the wavevectors and fields evolve with increased loss/gain and derive sufficient conditions for thresholdless transitions. As a multiplexing filter, this PT symmetric coaxial waveguide could help double density rates in on-chip nanophotonic networks.

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Taking Inspiration from Quantum-Wave Analogies—Recent Results for Photonic Crystals

Lein

2018

Springer Proceedings in Mathematics &Amp; Statistics

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Similarities between quantum systems and analogous systems for classical waves have been used to great effect in the physics community, be it to gain an intuition for quantum systems or to anticipate novel phenomena in classical waves. This proceeding reviews recent advances in putting these quantumwave analogies on a mathematically rigorous foundation for classical electromagnetism. Not only has this Schrödinger formalism of electromagnetism led to new, interesting mathematical problems for so-called Maxwell-type operators, it has also improved the understanding of the physics of topological phenomena in electromagnetic media. For example, it enabled us to classify electromagnetic media by their material symmetries, and explained why "fermionic time-reversal symmetries" -that were conjectured to exist in the physics literature -are in fact forbidden.

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Demonstration of Error Free Operation Up To 32 Gb/s From a CMOS Integrated Monolithic Nano-Photonic Transmitter

Cited by 6 publications

References 4 publications

Optically Pumped GeSn Microdisk Lasers on Si

Optically Pumped GeSn Microdisk Lasers on Si

Towards nanoscale multiplexing with parity-time-symmetric plasmonic coaxial waveguides

Taking Inspiration from Quantum-Wave Analogies—Recent Results for Photonic Crystals

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