Journal ArticleDOI
Arbitrary-ratio 1 × 2 power splitter based on asymmetric multimode interference
TLDR
Numerical and experimental results of an arbitrary-ratio 1×2 MMI power splitter, constructed by simply breaking the symmetry of the multimode region, indicate that the original advantages of MMI devices, such as low excess loss, weak wavelength dependence, and large fabrication tolerance are kept.Abstract:
Free choice of splitting ratio is one of the main properties of a power splitter required in integrated photonics, but conventional multimode interference (MMI) power splitters can only obtain a few discrete ratios. This Letter presents both numerical and experimental results of an arbitrary-ratio 1×2 MMI power splitter, which is constructed by simply breaking the symmetry of the multimode region. In the new device, the power splitting ratio can be adjusted continuously from 100∶0 to 50∶50, while the dimension of the multimode section stays in the range of 1.5×(1.8–2.8) μm. The experimental data also indicate that the proposed arbitrary-ratio splitter keeps the original advantages of MMI devices, such as low excess loss, weak wavelength dependence, and large fabrication tolerance.read more
Citations
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Journal ArticleDOI
Integrated photonic power divider with arbitrary power ratios
TL;DR: An ultra-compact power splitter with a QR code-like nanostructure is designed by a nonlinear fast search method and measured transmission efficiencies of all the splitters are close to 80% over 30 nm wavelength range.
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All passive photonic power divider with arbitrary split ratio
TL;DR: In this article, an ultra-compact power splitter with a QR code-like nanostructure is designed by a nonlinear fast search method (FSM), which is composed of a number of freely designed square pixels with the size of 120nm x 120nm which could be either dielectric or air.
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Subwavelength-grating-assisted broadband polarization-independent directional coupler.
TL;DR: This Letter presents both numerical and experimental results of a polarization-independent directional coupler based on slot waveguides with a subwavelength grating with a fabrication tolerance of ±20 nm for the grating structure and the coupling efficiencies for the two polarizations are both higher than -0.5” dB.
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Broadband, low-loss silicon photonic Y-junction with an arbitrary power splitting ratio.
Zhongjin Lin,Wei Shi +1 more
TL;DR: Numerical and experimental results show that the power splitting ratio of the proposed Y-junction on the SOI platform is weakly wavelength dependent.
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Microcomb-driven silicon photonic systems
TL;DR: In this paper , a power-efficient and operationally simple AlGaAs on insulator microcomb source is used to drive CMOS SiPh engines for optical data transmissions and microwave photonics respectively.
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Optical multi-mode interference devices based on self-imaging: principles and applications
LB Soldano,E.C.M. Pennings +1 more
TL;DR: The underlying self-imaging principle in multimode waveguides is described using a guided mode propagation analysis and it is shown that multimode interference couplers offer superior performance, excellent tolerance to polarization and wavelength variations, and relaxed fabrication requirements when compared to alternatives such as directional coupling.
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Optical bandwidth and fabrication tolerances of multimode interference couplers
TL;DR: In this article, the optical bandwidth and fabrication tolerances of MMI couplers were derived for strong guided structures, and they were shown to be inversely proportional to the number of input and output ports and the length of the device.
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Overlapping-image multimode interference couplers with a reduced number of self-images for uniform and nonuniform power splitting
TL;DR: Overlapping-image multimode interference (MMI) couplers, a new class of devices, permit uniform and nonuniform power splitting and a theoretical description directly relates coupler geometry to image intensities, positions, and phases.
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