Demonstration of a hitless bypass switch using nanomechanical perturbation for high-bitrate transparent networks

Chatterjee, Rohit; Yu, Mingbin; Stein, Aaron; Kwong, Dim‐Lee; Kimerling, Lionel C.; Wong, Chee Wei

doi:10.1364/oe.18.003045

Cited by 9 publications

(5 citation statements)

References 39 publications

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“…, in which the phase change of π between the symmetric mode and anti-symmetric mode [46] allows for complete crossover from one waveguide to another [47] in an ideal scenario. For a perfect 50-50 splitting ratio, the desired length for the coupler should be ,3 , ,…”

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confidence: 99%

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

Xu¹,

Xie²,

Zheng³

et al. 2013

Opt. Express

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Near-infrared Hong-Ou-Mandel quantum interference is observed in silicon nanophotonic directional couplers with raw visibilities on-chip at 90.5%.Spectrally-bright 1557-nm two-photon states are generated in a periodically-poled KTiOPO 4 waveguide chip, serving as the entangled photon source and pumped with a self-injection locked laser, for the photon statistical measurements. Efficient four-port coupling in the communications C-band and in the high-index-contrast silicon photonics platform is demonstrated, with matching theoretical predictions of the quantum interference visibility. Constituents for the residual quantum visibility imperfection are examined, supported with theoretical analysis of the sequentially-triggered multipair biphoton contribution and techniques for visibility compensation, towards scalable high-bitrate quantum information processing and communications. References and links 1.C. Weedbrook, S. Pirandola, S. Lloyd, and T. C. Ralph, "Quantum cryptography approaching the classical limit," Physical 57.

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confidence: 99%

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

Xu¹,

Xie²,

Zheng³

et al. 2013

Opt. Express

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“…15,16 tuneable couplers are used as switches to disconnect the filter from the input bus waveguide, yet this approach does not apply to broadband Vernier schemes because of the appearance of offband notches during tuning operations; in refs. [17][18][19] a Mach-Zehnder interferometer (MZI) bypass switch is exploited to transfer the entire input channel grid to an auxiliary filter bank, but this requires duplication of the entire filter architecture together with its control electronics.…”

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confidence: 99%

Polarization-transparent silicon photonic add-drop multiplexer with wideband hitless tuneability

et al. 2021

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Flexible optical networks require reconfigurable devices with operation on a wavelength range of several tens of nanometers, hitless tuneability (i.e. transparency to other channels during reconfiguration), and polarization independence. All these requirements have not been achieved yet in a single photonic integrated device and this is the reason why the potential of integrated photonics is still largely unexploited in the nodes of optical communication networks. Here we report on a fully-reconfigurable add-drop silicon photonic filter, which can be tuned well beyond the extended C-band (almost 100 nm) in a complete hitless (>35 dB channel isolation) and polarization transparent (1.2 dB polarization dependent loss) way. This achievement is the result of blended strategies applied to the design, calibration, tuning and control of the device. Transmission quality assessment on dual polarization 100 Gbit/s (QPSK) and 200 Gbit/s (16-QAM) signals demonstrates the suitability for dynamic bandwidth allocation in core networks, backhaul networks, intra- and inter-datacenter interconnects.

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“…Polarization independence was demonstrated in silicon nitride MRR filters by using a polarization diversity scheme [9], but without hitless tuning functionality. Only a few filter architectures were proposed that successfully implement hitless tuneability: in [15,16] tuneable couplers are used as switches to disconnect the filter from the input bus waveguide, yet this approach does not apply to broadband Vernier schemes because of the appearance of off-band notches during tuning operations; in [17,18,19] a Mach-Zehnder interferometer (MZI) bypass switch is exploited to transfer the entire input channel grid to an auxiliary filter bank, but this requires duplication of the entire filter architecture together with its control electronics.…”

mentioning

confidence: 99%

Polarization-transparent silicon photonic add-drop multiplexer with wideband hitless tuneability

Morichetti

Milanizadeh

Petrini

et al. 2021

Preprint

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Flexible optical networks require reconfigurable devices with operation on a wavelength range of several tens of nanometers, hitless tuneability (i.e. transparency to other channels during reconfiguration), and polarization independence. All these requirements have not been achieved yet in a single photonic integrated device and this is the reason why the potential of integrated photonics is still largely unexploited in the nodes of optical communication networks. Here we report on a fully-reconfigurable add-drop silicon photonic filter, which can be tuned well beyond the extended C-band (almost 100 nm) in a complete hitless (>35 dB channel isolation) and polarization transparent (1.2 dB polarization dependent loss) way. This achievement is the result of blended strategies applied to the design, calibration, tuning and control of the device. Transmission quality assessment on dual polarization 100 Gbit/s (QPSK) and 200 Gbit/s (16-QAM) signals demonstrate the suitability for dynamic bandwidth allocation in core networks, back-haul networks, intra- and inter-datacenter interconnects.

show abstract

Demonstration of a hitless bypass switch using nanomechanical perturbation for high-bitrate transparent networks

Cited by 9 publications

References 39 publications

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

Near-infrared Hong-Ou-Mandel interference on a silicon quantum photonic chip

Polarization-transparent silicon photonic add-drop multiplexer with wideband hitless tuneability

Polarization-transparent silicon photonic add-drop multiplexer with wideband hitless tuneability

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