Optical three-port circulators made with ring resonators

Jalas, Dirk; Petrov, Alexander Yu.; Eich, Manfred

doi:10.1364/ol.39.001425

Cited by 20 publications

(8 citation statements)

References 15 publications

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“…As the signal is incident from port 2, thanks to the gain amplification, the signal output from port 3 is actually larger than its original input power. Recall that in the proposed chip-based optical circulators with ring resonators [24][25][26] and photonic-crystal [23] resonators, both approaches still employ the magneto-optically induced frequency splitting between the clockwise and counter-clockwise travelling modes. In contrast to those methods, our work exploit the gain-saturation nonlinearity in an active WGM microtoroid through asymmetrical coupling between the cavity and two tapered photonic optical fibers.…”

Section: Gain-saturation Induced Optical Bidirectional Transmissionmentioning

confidence: 99%

“…To be compatible with the current CMOS technology, recent efforts have been made on the reduction of the size of these circulators by resonantly enhancing the interaction between light fields and magneto-optically active media. This leads to the concepts for on-chip circulators using photonic crystal [23] or microring resonators [24][25][26]. Thus far, there are limited experimental realizations for magneto-optical microring resonators [5] but none for photonic-crystal microresonators.…”

Section: Introductionmentioning

confidence: 99%

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Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

et al. 2015

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On-chip nonreciprocal light transport holds a great impact on optical information processing and communications based upon integrated photonic devices. By harvesting gain-saturation nonlinearity, we recently demonstrated on-chip optical asymmetric transmission at telecommunication bands with superior nonreciprocal performances using only one active whispering-gallery-mode microtoroid resonator, beyond the commonly adopted magneto-optical (Faraday) effect. Here, detailed theoretical analysis is presented with respect to the reported scheme. Despite the fact that our model is simply the standard coupled-mode theory, it agrees well with the experiment and describes the essential one-way light transport in this nonreciprocal device. Further discussions, including the connection with the second law of thermodynamics and Fano resonance, are also briefly made in the end.

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Section: Gain-saturation Induced Optical Bidirectional Transmissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

et al. 2015

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“…Nowadays, many studies for designing novel devices are related to the magneto-optical materials for their nonreciprocal property [5]–[10]. Especially, as an essential component in microwave or optical integrated circuits, the wave circulators based on photonic crystal waveguides (PCWs) and magneto-optical materials have attracted much attention for their ability in avoiding unwanted among sub-component reflections and interferences, which would destroy the functions of the designed systems.…”

Section: Introductionmentioning

confidence: 99%

Highly Compact Circulators in Square-Lattice Photonic Crystal Waveguides

Ouyang

Wang

et al. 2014

PLoS ONE

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We propose, demonstrate and investigate highly compact circulators with ultra-low insertion loss in square-lattice- square-rod-photonic-crystal waveguides. Only a single magneto- optical square rod is required to be inserted into the cross center of waveguides, making the structure very compact and ultra efficient. The square rods around the center defect rod are replaced by several right-angled-triangle rods, reducing the insertion loss further and promoting the isolations as well. By choosing a linear-dispersion region and considering the mode patterns in the square magneto-optical rod, the operating mechanism of the circulator is analyzed. By applying the finite-element method together with the Nelder-Mead optimization method, an extremely low insertion loss of 0.02 dB for the transmitted wave and ultra high isolation of 46 dB∼48 dB for the isolated port are obtained. The idea presented can be applied to build circulators in different wavebands, e.g., microwave or Tera-Hertz.

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“…To be reconcilable with the existing CMOS technology, recent progresses were made on reducing the size of these circulators through resonant enhancement of the interaction between light waves and magneto-optically active media2122. This generates the concepts for on-chip circulators using photonic-crystal23 or microring242526 resonators. To date, there have been few experimental realizations for magneto-optical microring resonators927 but none for photonic-crystal microresonators.…”

mentioning

confidence: 99%

On-Chip Optical Nonreciprocity Using an Active Microcavity

Jiang

Yang

et al. 2016

Sci Rep

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Optically nonreciprocal devices provide critical functionalities such as light isolation and circulation in integrated photonic circuits for optical communications and information processing, but have been difficult to achieve. By exploring gain-saturation nonlinearity, we demonstrate on-chip optical nonreciprocity with excellent isolation performance within telecommunication wavelengths using only one toroid microcavity. Compatible with current complementary metal-oxide-semiconductor process, our compact and simple scheme works for a very wide range of input power levels from ~10 microwatts down to ~10 nanowatts, and exhibits remarkable properties of one-way light transport with sufficiently low insertion loss. These superior features make our device become a promising critical building block indispensable for future integrated nanophotonic networks.

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Optical three-port circulators made with ring resonators

Cited by 20 publications

References 15 publications

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

Highly Compact Circulators in Square-Lattice Photonic Crystal Waveguides

On-Chip Optical Nonreciprocity Using an Active Microcavity

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