Performance Comparison of Grating-Assisted Integrated Photonic Delay Lines

Toroghi, Seyfollah; Fisher, Chris; Khan, Saeed; Fathpour, Sasan

doi:10.1109/jlt.2016.2619182

Cited by 9 publications

(2 citation statements)

References 15 publications

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“…The grating can be combined with microring resonators to provide more flexibility in delay line design. Toroghi et al compared grating-assisted waveguides and gratingassisted microring delay lines [83] . It was found that the grating-assisted SCISSORs exhibit the best performance in terms of delay tunability and delay per footprint.…”

Section: Grating Delay Linementioning

confidence: 99%

Integrated optical delay lines: a review and perspective [Invited]

Zhou

Wang

et al. 2018

Chin. Opt. Lett.

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Optical delay lines (ODLs) are one of the key enabling components in photonic integrated circuits and systems. They are widely used in time-division multiplexing, optical signal synchronization and buffering, microwave signal processing, beam forming and steering, etc. The development of integrated photonics pushes forward the miniaturization of ODLs, offering improved performances in terms of stability, tuning speed, and power consumption. The integrated ODLs can be implemented using various structures, such as single or coupled resonators, gratings, photonic crystals, multi-path switchable structures, and recirculating loop structures. The delay tuning in ODLs is enabled by either changing the group refractive index of the waveguide or changing the length of the optical path. This paper reviews the recent development of integrated ODLs with a focus on their abundant applications and flexible implementations. The challenges and potentials of each type of ODLs are pointed out.

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Section: Grating Delay Linementioning

confidence: 99%

Integrated optical delay lines: a review and perspective [Invited]

Zhou

Wang

et al. 2018

Chin. Opt. Lett.

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“…One is side-coupled integrated spaced sequence of resonators and the other is coupled resonator optical waveguide (CROW). Due to their high-order coupling nature [9][10][11], both structures are sensitive to defects and disorder, which eventually reduces the delay transmission amount. Photonic topological insulator (PTI) is a special structure that is internally insulated and guides light along the surface offering the advantages of low loss, unidirectional transmission and robustness.…”

Section: Introductionmentioning

confidence: 99%

Optical delay lines in topological microring resonator array

Wu¹,

Mo²,

Jin³

et al. 2022

J. Opt.

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We use a periodic microring resonator array (MRRA) to realize photonic topological insulator (PTI). By tuning the coupling of resonators, two topological edge states can be observed in different bands in the dispersive band, normalized transmission spectrum and light field distribution. From the dispersion band structure, we calculate the group velocity, group velocity dispersion, normalized delay bandwidth product and other delay properties. It is demonstrated that optical delay lines (ODLs) in topological MRRA not only can obtain a comparable delay times, but also show a flatter transmission spectrum and more stable delay time, compared with the traditional coupled resonator optical waveguide. Our work may provide a theoretical reference for the topological ODLs with robust transmission.

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Integrated Optical Tunable Delay Line and Microwave Photonic Beamforming Chip: A Review

Shi,

Niu,

Shi

et al. 2024

Laser & Photonics Reviews

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The microwave photonic (MWP) beamforming chip is a crucial component for achieving the miniaturization of optically controlled phased array radar systems. It addresses the unwanted ‘beam squint’ effect of traditional electronic antenna arrays in processing wideband RF signals through optical tunable delay lines (OTDLs), which has garnered significant attention and research efforts in recent years. This review provides a comprehensive overview of the latest research progress on the classification, working principle, calibration and delay measurement methods, driving and control technologies, and system function verifications of OTDL and MWP beamforming chips. Also, discussions about the challenges that need to be addressed and the future development trends for this technology are given.

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Performance Comparison of Grating-Assisted Integrated Photonic Delay Lines

Cited by 9 publications

References 15 publications

Integrated optical delay lines: a review and perspective [Invited]

Integrated optical delay lines: a review and perspective [Invited]

Optical delay lines in topological microring resonator array

Integrated Optical Tunable Delay Line and Microwave Photonic Beamforming Chip: A Review

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