A 60 μm-Long Fiber-to-Chip Edge Coupler Assisted by Subwavelength Grating Structure with Ultralow Loss and Large Bandwidth

Xiao, Yan; Xu, Yin; Dong, Yue; Zhang, Bo; Ni, Yi

doi:10.3390/photonics9060413

Cited by 11 publications

(5 citation statements)

References 31 publications

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“…Figure 7a shows a scheme of a trident design using subwavelength grating (SWG) tips. Similar designs using multi-tips with SWGs to improve the coupling efficiency have been demonstrated in [11], [23], [24]. With respect to conventional trident or forks designs, SWG tridents take advantage of the flexibility of the effective index which can be engineered by modifying the duty cycle of the grating.…”

Section: Edge Taper Designsmentioning

confidence: 89%

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

Caut,

Shekhawat,

Torres-Company

et al. 2024

IEEE Photonics J.

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This paper demonstrates with FDTD simulations a silicon nitride polarization independent coarse wavelength division multiplexing (CWDM) receiver platform based on square waveguides for optical interconnects at 1 𝜇m. Here, the channel spacing of the demultiplexers is much smaller than standard CWDM systems (25 nm) and is set to 8 nm. To avoid high waveguide propagation and radiation losses, several waveguide dimensions were considered. The 450 nm (width) x 450 nm (height) waveguide presented a good tradeoff between low loss and single-mode behavior and was therefore selected. The demultiplexer has a simulated polarization dependence on the waveguide's width variations of 0.17 nm/nm. In addition, we present edge coupler designs with coupling loss within 2.5 dB for TE and TM polarization.

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Section: Edge Taper Designsmentioning

confidence: 89%

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

Caut,

Shekhawat,

Torres-Company

et al. 2024

IEEE Photonics J.

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“…Alternative technologies such as SU8 polymer interposers or tapered waveguides (eg: bilayered inverse taper in lithium niobate [635]) could also be used in place of WAFTs. In addition, there are a host of other fiber tapers including capped adiabatic tapered fibers, lensed fibers [636], or cascaded tapers and cantilever tapers [637]. Interconnects are also critical to connect different photonic devices.…”

Section: Advances In Science and Technology To Meet Challengesmentioning

confidence: 99%

2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments

Jovanovic,

Gatkine,

Anugu

et al. 2023

J. Phys. Photonics

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Photonic technologies offer numerous functionalities that can be used to realize astrophotonic instruments. The most spectacular example to date is the ESO Gravity instrument at the Very Large Telescope in Chile that combines the light-gathering power of four 8-m telescopes through a complex photonic interferometer. Fully integrated astrophotonic devices offer critical advantages for instrument development, including extreme miniaturization when operating at the diffraction-limit, plus integration, superior thermal and mechanical stabilization owing to the small footprint, and high replicability offering significant cost savings. Numerous astrophotonic technologies have been developed to address shortcomings of conventional instruments to date, including the development of photonic lanterns to convert from multimode inputs to single mode outputs, complex aperiodic fiber Bragg gratings to filter OH emission from the atmosphere, beam combiners enabling long baseline interferometry with for example, ESO Gravity, and laser frequency combs for high precision spectral calibration of spectrometers. Despite these successes, the facility implementation of photonic solutions in astronomical instrumentation is currently limited because of 1) low throughputs from coupling to fibers, coupling fibers to chips, propagation and bend losses, device losses, etc., 2) difficulties with scaling to large channel count devices needed for large bandwidths and high resolutions, and 3) efficient integration of photonics with detectors. In this roadmap, we identify 23 key areas that need further development. We outline the challenges and advances needed across those areas covering design tools, simulation capabilities, fabrication processes, the need for entirely new components, integration and hybridization and the characterization of devices. To realize these advances the astrophotonics community will have to work cooperatively with industrial partners who have more advanced manufacturing capabilities. With the advances described herein, multi-functional integrated instruments will be realized leading to novel observing capabilities for both ground and space based platforms, enabling new scientific studies and discoveries.

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“…Transmission photon loss within the telecom band below 0.25 dB km −1 has been achieved through fibers. [ 101 ] While photon transmission using fibers suffers some loss and requires repeaters for teleportation over relatively longer distances, high‐fidelity teleportation can be achieved within intracity distances.…”

Section: Quantum Networkingmentioning

confidence: 99%

Quantum Communication Networks for Energy Applications: Review and Perspective

Paudel,

Crawford,

Lee

et al. 2023

Adv Quantum Tech

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The energy sector is expected to undergo significant changes in the coming decades with the advent of new technologies, including smart grid development, microgrid expansion, increasing electric vehicle and renewable energy usage, and enhanced measures to minimize greenhouse gas emission, among others. In tandem, these changes are expected to create new opportunities for the deployment of quantum technologies within the energy sector. Building on the authors' previous reviews on the current state of and future opportunities for quantum sensing, quantum computing and quantum simulations for energy sector applications, this work provides an overview of recent progress in quantum networking and communications for the energy industry, with a focus on platforms, devices, and protocols, including quantum teleportation and quantum key distribution. Specific areas of relevance to the energy sector are then analyzed, including the role of quantum networks for greenhouse gas monitoring, secure data collection and transmission in smart grids, nuclear power plants’ safety, facilitating oil and gas exploration, and other energy‐relevant applications. This review concludes with a brief overview of areas for future innovation, including the need for platforms for simulating quantum networks, quantum material and platform design, and computational approaches to accelerate quantum protocol discovery and development.

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A 60 μm-Long Fiber-to-Chip Edge Coupler Assisted by Subwavelength Grating Structure with Ultralow Loss and Large Bandwidth

Cited by 11 publications

References 31 publications

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

Polarization-Insensitive Silicon Nitride Photonic Receiver at 1 $\mu$m for Optical Interconnects

2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments

Quantum Communication Networks for Energy Applications: Review and Perspective

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