Wideband silicon-photonic thermo-optic switch in a wavelength-division multiplexed ring network

Aguinaldo, Ryan; Forencich, Alex; DeRose, Christopher T.; Lentine, Anthony L.; Trotter, Douglas C.; Fainman, Yeshaiahu; Porter, George; Papen, George C.; Mookherjea, Shayan

doi:10.1364/oe.22.008205

Cited by 57 publications

(40 citation statements)

References 21 publications

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“…Optical couplers are essential for coupling light between waveguides in photonic integrated circuits (PICs), which are often used in applications such as wavelength-division-multiplexing [1] and optical switching [2]. Adiabatic couplers [3], [4], multimode interference (MMI) couplers [5], [6], and directional couplers (DCs) [7], [8] are three types of optical coupler that are often used in PICs.…”

Section: Introductionmentioning

confidence: 99%

Compact Broadband Directional Couplers Using Subwavelength Gratings

Wang

Zheng

et al. 2016

IEEE Photonics J.

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We experimentally demonstrate compact, broadband directional couplers using sub-wavelength gratings for silicon-on-insulator wafers with silicon layers of 220nm. The dispersion properties of the optical modes are engineered using sub-wavelength gratings, which allows broadband operation. Finite-difference time-domain based band structure calculations, with significantly reduced simulation time, were used to analyze the design, which included both the structure and the material dispersions. Compact broadband direction couplers, with device lengths shorter than 14µm, which cover a bandwidth of 100nm, for power splitting ratios of 50/50, 40/60, 30/70, and 20/80, are designed and fabricated for the fundamental transverse electric mode with a central operating wavelength of 1550nm.

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Section: Introductionmentioning

confidence: 99%

Compact Broadband Directional Couplers Using Subwavelength Gratings

Wang

Zheng

et al. 2016

IEEE Photonics J.

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“…Using the optimal coupling value (Supplementary Information S1), the total power penalty was calculated for the proposed architecture according to Equation (4). Figure 2 shows the expected increase in total power penalty according to increasing switch radix.…”

Section: Architectural Evaluationmentioning

confidence: 99%

“…Optical switching has the potential to enable ultra-high capacity optical networks that can deliver large volumes of data with timeof-flight latencies [1][2][3][4] . A compact switching device has the potential to enable emerging applications in computing architectures such as optically interconnected processors and memories 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Modular architecture for fully non-blocking silicon photonic switch fabric

Nikolova¹,

Calhoun²,

Liu³

et al. 2017

Microsyst Nanoeng

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Integrated photonics offers the possibility of compact, low energy, bandwidth-dense interconnects for large port count spatial optical switches, facilitating flexible and energy efficient data movement in future data communications systems. To achieve widespread adoption, intimate integration with electronics has to be possible, requiring switch design using standard microelectronic foundry processes and available devices. We report on the feasibility of a switch fabric comprised of ubiquitous silicon photonic building blocks, opening the possibility to combine technologies, and materials towards a new path for switch fabric design. Rather than focus on integrating all devices on a single silicon chip die to achieve large port count optical switching, this work shifts the focus towards innovative packaging and integration schemes. In this work, we demonstrate 1 × 8 and 8 × 1 microring-based silicon photonic switch building blocks with software control, providing the feasibility of a full 8 × 8 architecture composed of silicon photonic building blocks. The proposed switch is fully non-blocking, has path-independent insertion loss, low crosstalk, and is straightforward to control. We further analyze this architecture and compare it with other common switching architectures for varying underlying technologies and radices, showing that the proposed architecture favorably scales to very large port counts when considering both crosstalk and architectural footprint. Separating a switch fabric into functional building blocks via multiple photonic integrated circuits offers the advantage of piece-wise manufacturing, packaging, and assembly, potentially reducing the number of optical I/O and electrical contacts on a single die.

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“…[1], [2] . Silicon-on-insulator (SOI) platform has presented its exclusive merits in developing high-performance functional components and systems, especially the silicon waveguide based thermo-optic (TO) switches have been attracting intensive interests [3]- [8]. In addition, the large-scale optical switching systems specially need the highly integrated optical high port-count matrix switches (HPC-MS), for which the digital optical switches (DOS) present the exclusive advancements in the performance-price effect since the output signal of a DOS is insensitive to a deviation from the modulating signal and has a high tolerance in design/fabrication, resulting in the stable switching operations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Verification of Digital Thermo-Optic Switches with Silicon-on-Insulator Waveguide Corner Mirror

Li¹,

Shi²,

Sun³

et al. 2019

Proceedings of the 2019 International Conference on Big Data, Electronics and Communication Engineering (BDECE 2019)

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In this work, an effective Goos-Hänchen (GH) spatial shift of reflective guided-mode is implemented with a waveguide corner mirror structure and further with an efficient combination of the GH spatial shift and the thermo-optic (TO) refractive index modulation (RIM), the function of a digital TO switch is systematically simulated with the theoretical model and the professional software of finite difference time-domain (FDTD). Therefore, on the silicon-on-insulator (SOI) platform, the functions of a 1×3/1×2 digital optical switch are experimentally demonstrated.

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Wideband silicon-photonic thermo-optic switch in a wavelength-division multiplexed ring network

Cited by 57 publications

References 21 publications

Compact Broadband Directional Couplers Using Subwavelength Gratings

Compact Broadband Directional Couplers Using Subwavelength Gratings

Modular architecture for fully non-blocking silicon photonic switch fabric

Experimental Verification of Digital Thermo-Optic Switches with Silicon-on-Insulator Waveguide Corner Mirror

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