High performace silicon 2x2 optical switch based on a thermo-optically tunable multimode interference coupler and efficient electrodes

Rosa, Agostinho C.; Gutiérrez, Ana María Vega; Brimont, A.; Griol, Amadeu; Sanchís, Pablo

doi:10.1364/oe.24.000191

Cited by 58 publications

(26 citation statements)

References 20 publications

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“…For these complex analyses, taking the thermal-optic effects into account, the temperature distributions and the optical output characteristics of the proposed structure are simulated and analyzed then. We initially set the length of the heater L h to 50 μm, similar to Rosa et al 20 Naturally…”

Section: Simulation and Optimizationmentioning

confidence: 99%

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Optimization of a thermally tuned silicon-based reconfigurable optical power splitter with thermal isolations

Han

2017

Opt. Eng

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Abstract. In this paper, a thermally tuned silicon-based three-channel reconfigurable multimode interference (MMI) optical power splitter with four optimized thermal isolations is proposed. Specific and flexible reconfigurable functions (1 × 1, 1 × 2, and 1 × 3 MMI splitters) can be achieved by thermally tuning the heaters. By using a beam propagation method, the optimum geometry of the heaters, desired refractive index changes, and phase shifts of the MMI splitter are calculated at first. The temperature distributions of the devices without and with the thermal isolations are then analyzed by using the finite element method. Thermal crosstalk between adjacent heaters is observed and the influence of the thermal isolation geometry on the thermal crosstalk is examined subsequently. The geometry of the thermal isolations is optimized based on the trade-off between the thermal tuning efficiency and optical output characteristics. Finally, satisfactory improvements with the proposed structure are demonstrated with high-thermal efficiency (the maximum power dissipation decreases reach 43.7% and 55.2% for 1 × 1 and 1 × 2 MMI splitters, respectively) and good optical output quality (the maximum excess losses are as low as 0.365, 0.388, and 0.272 dB for 1 × 1, 1 × 2, and 1 × 3 MMI splitters, respectively; the crosstalk is less than −21.27 and −15.54 dB for 1 × 1 and 1 × 2 MMI splitters, respectively). © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Section: Simulation and Optimizationmentioning

confidence: 99%

“…20 The current-injection tuning scheme is a great option that satisfies the need for a high-tuning speed. 21 However, this scheme uses a complex excess doping process, which makes the fabrication more complex.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a thermally tuned silicon-based reconfigurable optical power splitter with thermal isolations

Han

2017

Opt. Eng

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“…Optical interconnects have emerged as the key enabling technology for deploying point-to-point high-bandwidth links and pressure is now put also in the switching and routing elements to handle the massive throughput enabled by the optical links. Recent attempts are focusing on taking advantage of the progress in photonic integration towards producing alternative on-chip switching and routing schemes that can reap the inherent speed and energy benefits of optics [1][2][3][4]. In this context, wavelength routing based on Arrayed Waveguide Gratings Routers (AWGRs) has emerged as a promising interconnection solution for datacom environments [5], since AWGRs can offer a low latency, non-blocking interconnection even for an all-to-all communication scheme, when employed as N × N routers [6].…”

Section: Introductionmentioning

confidence: 99%

Silicon photonic 8 × 8 cyclic Arrayed Waveguide Grating Router for O-band on-chip communication

Pitris¹,

Dabos²,

Mitsolidou³

et al. 2018

Opt. Express

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We report an 8 × 8 silicon photonic integrated Arrayed Waveguide Grating Router (AWGR) targeted for WDM routing applications in O-band. The AWGR was designed for cyclic-frequency operation with a channel spacing of 10 nm. The fabricated AWGR exhibits a compact footprint of 700 × 270 μm. Static device characterization revealed 3.545 dB maximum channel loss non-uniformity with 2.5 dB best-case channel insertion losses and 11 dB channel crosstalk, in good agreement with the simulated results. Successful data routing operation is demonstrated with 25 Gb/s signals for all 8 × 8 AWGR port combinations with a maximum power penalty of 2.45 dB.

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“…Following several decades of explosive growth, the information industry has become a major energy consumer owing to the high power consumption by data centres 1 . As one of the most promising candidates for satisfying the comprehensive information industry requirements of low energy consumption, speed, bandwidth, density and cost, integrated silicon photonics 2 3 4 5 have made rapid progress in a wide range of functionalities such as modulators 6 7 , photodetectors 8 9 10 and optical switches 11 . This is largely enabled by silicon's low loss, low cost and high fabrication compatibility with complementary metal-oxide semiconductor (CMOS) technology 12 13 .…”

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confidence: 99%

Slow-light-enhanced energy efficiency for graphene microheaters on silicon photonic crystal waveguides

et al. 2017

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Slow light has been widely utilized to obtain enhanced nonlinearities, enhanced spontaneous emissions and increased phase shifts owing to its ability to promote light–matter interactions. By incorporating a graphene on a slow-light silicon photonic crystal waveguide, here we experimentally demonstrate an energy-efficient graphene microheater with a tuning efficiency of 1.07 nmmW−1 and power consumption per free spectral range of 3.99 mW. The rise and decay times (10–90%) are only 750 and 525 ns, which, to the best of our knowledge, are the fastest reported response times for microheaters in silicon photonics. The corresponding figure of merit of the device is 2.543 nW s, one order of magnitude better than results reported in previous studies. The influence of the length and shape of the graphene heater to the tuning efficiency is further investigated, providing valuable guidelines for enhancing the tuning efficiency of the graphene microheater.

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High performace silicon 2x2 optical switch based on a thermo-optically tunable multimode interference coupler and efficient electrodes

Cited by 58 publications

References 20 publications

Optimization of a thermally tuned silicon-based reconfigurable optical power splitter with thermal isolations

Optimization of a thermally tuned silicon-based reconfigurable optical power splitter with thermal isolations

Silicon photonic 8 × 8 cyclic Arrayed Waveguide Grating Router for O-band on-chip communication

Slow-light-enhanced energy efficiency for graphene microheaters on silicon photonic crystal waveguides

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