Magneto-optical nonreciprocal phase shift in garnet/silicon-on-insulator waveguides

Espinola, Richard L.; Izuhara, Tomoyuki; Tsai, Ming-Chun; Osgood, Richard M.; Dötsch, H.

doi:10.1364/ol.29.000941

Cited by 173 publications

(83 citation statements)

References 11 publications

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“…This method has been generally adopted in commercial optical isolators and circulators. However, unfortunately these bulky components are difficult to be implemented with the existing complementary metal-oxide-semiconductor (CMOS) processing, and the use of external magnetic fields is also deleterious to the functionalities of nearby devices [5,6]. The quest for on-chip optical nonreciprocal devices has recently spawned a number of strategies beyond the Faraday effect.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

et al. 2015

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“…In the presence of a nonzero magnetization in the magneto-optical material along the y axis, the degeneracy between the two counterpropagating modes splits since the time-reversal symmetry is broken. Assuming that H y is the dominant magnetic-field component of these modes, the splitting of the wave vectors of two modes at a given frequency is given by [20] …”

Section: A Magneto-optical Waveguidementioning

confidence: 99%

“…(19) and (20), the coupling coefficient from resonators at r = (x,y) to the resonator at r + aŷ is given by…”

Section: Two-dimensional Resonator Latticementioning

confidence: 99%

Effective magnetic field for photons based on the magneto-optical effect

Fang

Fan

2013

Phys. Rev. A

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We propose to create an effective magnetic field for photons in photonic crystal resonator lattices using the magneto-optical effect. The inter-resonator coupling is mediated by magneto-optical waveguides or magnetooptical resonators, and thus the coupling between the nearest-neighbor photonic crystal resonators acquire a direction-dependent phase. The effective magnetic field can be realized with a proper choice of the spatial distribution of such a direction-dependent phase.

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“…Similarly, devices with optical diode effect are fundamental elements for information processing in optical integration systems. Great efforts have been made to realize such 'optical diodes' with non-reciprocal propagation of light by breaking the time-reversal symmetry, such as indirect interband photonic transition 1,2 , magneto-optic effect [3][4][5][6][7] , optical nonlinearity [8][9][10] or photonic crystals 11 . In addition, numerous reciprocal structures are designed as alternatives to achieve asymmetric propagation of light by employing metamaterials [12][13][14][15][16][17][18][19][20] for either circularly polarized waves or linearly polarized waves.…”

mentioning

confidence: 99%

Broadband asymmetric waveguiding of light without polarization limitations

Hou

et al. 2013

Nat Commun

111

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Optical diodes are fundamental elements for optical computing and information processing. Attempts to realize such non-reciprocal propagation of light by breaking the time-reversal symmetry include using indirect interband photonic transitions, the magneto-optical effect, optical nonlinearity or photonic crystals. Alternatively, asymmetric reciprocal transmission of light has been proposed in photonic metamaterial structures for either circularly or linearly polarized waves. Here we employ the recent concept of gradient index metamaterials to demonstrate a waveguide with asymmetric propagation of light, independent of polarization. The device blocks both transverse electric and magnetic polarized modes in one direction but transmits them in the other for a broadband spectrum. Unlike previous works using chiral properties of metamaterials, our device is based on the principle of momentum symmetry breaking at interfaces with phase discontinuities. Experiments in the microwave region verify our findings, which may pave the way to feasible passive optical diodes.

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Magneto-optical nonreciprocal phase shift in garnet/silicon-on-insulator waveguides

Cited by 173 publications

References 11 publications

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

Modeling of On-Chip Optical Nonreciprocity with an Active Microcavity

Effective magnetic field for photons based on the magneto-optical effect

Broadband asymmetric waveguiding of light without polarization limitations

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