Silicon Integrated Continuously Tunable Dispersion Compensator Based on Cascaded Micro-Ring Resonators

Liu, Yuanbin; Lu, Liangjun; Ni, Ziheng; Chen, Jiaqi; Chen, Jianping; Zhou, Linjie

doi:10.1109/acp55869.2022.10088552

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…As shown in Ref. 28, the maximal dispersion is as high as −720 ps∕nm, but its bandwidth is even <0.5 nm. In addition, critical thermal tuning is necessary for the DCs based on MZIs and MRRs for precise dispersion management.…”

Section: Introductionmentioning

confidence: 69%

On-chip digitally tunable positive/negative dispersion controller using bidirectional chirped multimode waveguide gratings

Liu,

Ma,

et al. 2023

Adv. Photon.

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Section: Introductionmentioning

confidence: 69%

On-chip digitally tunable positive/negative dispersion controller using bidirectional chirped multimode waveguide gratings

Liu,

Ma,

et al. 2023

Adv. Photon.

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“…Silicon photonics compatible with CMOS technology is the most popular platform to explore on-chip optical interconnect systems. Several integrated dispersion management devices with different operation mechanisms such as arrayed waveguide grating (AWG), microring resonators (MRRs), , Mach–Zehnder interferometers (MZIs), , and waveguide Bragg gratings , have been reported as shown in Table , clearly indicating that devices with waveguide Bragg gratings have overall good performance such as low loss and compact footprint. Therefore, waveguide Bragg grating is highly desired for high-performance dispersion engineering. − As far as we know, most of the reported on-chip spiral gratings are based on fundamental electric modes (TE 0 ) or fundamental magnetic modes (TM 0 ), , so an optical circulator has to be adopted to separate the input and output signals.…”

Section: Introductionmentioning

confidence: 99%

On-Chip Circulator-Free Chirped Spiral Multimode Waveguide Grating for Dispersion Management

et al. 2023

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Waveguide gratings are one of the key optical dispersion handling devices and are highly desired for many on-chip photonic systems. However, most of the previously reported waveguide gratings require optical circulators to separate input and reflected signals. Here, a circulator-free chirped spiral multimode waveguide grating (SMWG) composed of an asymmetric chirped multimode waveguide grating and a mode (de)multiplexer is first proposed and demonstrated for dispersion management on a silicon-on-insulator (SOI) platform. The chirped SMWG reflects the TE 0 mode into the TE 1 mode so that input and reflected signals can be separated with the assistance of a mode (de)multiplexer instead of a circulator. The spiral waveguide with a continuously varying radius enables a large amount of dispersion within a compact footprint. Group delay ripples are suppressed by superposition modulation on lateral corrugations. The fabricated 5 mm chirped SMWG realizes a maximum group delay of 150 ps and dispersion of 6.49 ps/nm within a bandwidth of 22 nm. The proposed circulator-free chirped SMWG will find many applications such as optical communication, microwave photonics, and pulse compression.

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“…In recent years, the adoption of silicon photonics facilitated the integration of various siliconbased photonic devices, including chirped Bragg gratings [33][34][35][36][37] , Mach-Zehnder interferometers (MZIs) 38,39 , and microring resonators (MRRs) [40][41][42][43][44][45][46] , to effectively mitigate the impact of CD in singlemode fibers (SMFs). These integrated devices offer several advantages, including a compact form factor, cost efficiency, a low power consumption, and a high reconfigurability.…”

Section: Introductionmentioning

confidence: 99%

Parallel Wavelength-Division-Multiplexed Signal Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Microrings

Lu,

Liu,

Zhang

et al. 2023

Preprint

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The proliferation of computation-intensive technologies has led to a significant rise in the number of datacenters, posing challenges for high-speed and power-efficient datacenter interconnects (DCIs). Although inter-DCIs based on intensity modulation and direct detection (IM-DD) along with wavelength-division multiplexing (WDM) technologies exhibit cost-effective, power-efficient, and large-capacity properties, the requirement of multiple laser sources leads to high costs and limited scalability. Moreover, careful considerations must be given to the chromatic dispersion in the C-band as it restricts the transmission length of the optical signals. Electronic and optical approaches based on digital signal processing algorithms or dispersion-compensating fibers suffer from either a high power consumption or a lack of full reconfigurability. In this study, we present an original scalable on-chip parallel IM-DD data transmission system enabled by a single-soliton Kerr microcomb and a reconfigurable microring resonator (MRR)-based dispersion compensator. The highly compact MRR-based Kerr microcomb and dispersion compensator are intrinsically compatible with the parallel processing nature of the WDM link. Besides, the reconfigurability of the dispersion compensator shows the validation for various data-rate transmissions over multiple single-mode fiber lengths of up to 40 km, with a power consumption of below 160 mW, regardless of the modulation format or of the number of transmission channels utilized. Through our experimental validation, we demonstrate an aggregate bit rate of 1.68 Tbit/s over a 20-km-long single-mode fiber using 15 independent wavelength channels spaced at 100 GHz. Our approach holds significant promise for achieving data communications at a scale exceeding 10 terabits, making it highly valuable for future hyper-scale DCIs.

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Silicon Integrated Continuously Tunable Dispersion Compensator Based on Cascaded Micro-Ring Resonators

Cited by 4 publications

References 8 publications

On-chip digitally tunable positive/negative dispersion controller using bidirectional chirped multimode waveguide gratings

On-chip digitally tunable positive/negative dispersion controller using bidirectional chirped multimode waveguide gratings

On-Chip Circulator-Free Chirped Spiral Multimode Waveguide Grating for Dispersion Management

Parallel Wavelength-Division-Multiplexed Signal Transmission and Dispersion Compensation Enabled by Soliton Microcombs and Microrings

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