Response shaping with a silicon ring resonator via double injection

Cohen, R.; Amrani, Ofer; Ruschin, S.

doi:10.1038/s41566-018-0275-4

Cited by 54 publications

(29 citation statements)

References 35 publications

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“…This effect is further tailored to realize programming of a versatile photonic device known as a micro‐ring resonator (MRR) cladded with PEMs. MRRs have been suggested as elementary building blocks in optical filters, [ 33,34 ] memories, [ 10,15,35 ] and switches, [ 36–38 ] and the ability to program them to a desirable state offers many possibilities. The changes of the large refractive index of the cladding and of the resulting n eff of the guided modes may be engineered in two ways for such a resonant PIC.…”

Section: Introductionmentioning

confidence: 99%

Reversibly Programmable Photonics via Responsive Polyelectrolyte Multilayer Cladding

Mohammed

Sproncken

Gumí-Audenis

et al. 2020

Advanced Optical Materials

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Reversibly programmable photonic integrated circuits (PICs) that can facilitate multifunctionality have been long sought after to deliver user‐level design flexibility. Issues like complicated control, continuous power consumption, and high optical losses hinder their large‐scale adaptation. In this work, a novel approach toward programmable photonics using a responsive polyelectrolyte multilayer (PEM) cladding is presented. Reversible (de)swelling of PEMs by consecutive exposure to acidic and neutral pH solutions yields highly contrasting refractive index changes in the dry film. Utilizing this effect, an easily applied technique for programming photonic integrated devices with two different approaches, complete and area‐selective deposition, for several reversible cycles is demonstrated. These devices operate at two distinct states that are virtually lossless and nonvolatile. This proof‐of‐concept demonstration is suitable for various photonic integration platforms to facilitate reconfigurable photonic processors, static memories, and fine‐tuning of fabrication related limitations. Therefore, these results are the first step toward PEM‐assisted reversibly programmable multipurpose PICs for low‐cost mass production.

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Section: Introductionmentioning

confidence: 99%

Reversibly Programmable Photonics via Responsive Polyelectrolyte Multilayer Cladding

Mohammed

Sproncken

Gumí-Audenis

et al. 2020

Advanced Optical Materials

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“…An MRR device was chosen for exploiting the metastable refractive index property of a‐Si:H and to demonstrate a reconfigurable photonic device. An MRR is a versatile photonic integrated device that has been suggested as a building block for optical filters, memory elements, and optical switches . The schematic of the MRR and the scanning electron microscope (SEM) image of its constituent waveguide cross‐section are shown in Figure a.…”

Section: Resultsmentioning

confidence: 99%

“…An MRR is a versatile photonic integrated device that has been suggested as a building block for optical filters, memory elements, and optical switches. [9,15,[49][50][51][52][53] The schematic of the MRR and the scanning electron microscope (SEM) image of its constituent waveguide cross-section are shown in Figure 3a. The waveguides were designed to be 510 nm in width and 220 nm in height for the propagation of fundamental TE-like mode.…”

Section: A Reconfigurable Optical Switch With A-si:hmentioning

confidence: 99%

Metastable Refractive Index Manipulation in Hydrogenated Amorphous Silicon for Reconfigurable Photonics

Mohammed

Melskens

Pagliano

et al. 2020

Advanced Optical Materials

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Hydrogenated amorphous silicon (a‐Si:H) is known for exhibiting light‐induced metastable properties that are reversible upon annealing. While these are commonly associated with the well‐known deleterious Staebler–Wronski effect in the field of thin‐film silicon solar cells, the associated changes in optical properties have not been well studied. Emerging reconfigurable photonic devices and applications can benefit from metastable optical properties where two states of the material are reversibly accessible without the need for continuous stimulation. The study demonstrates a light‐induced 0.3% increase of the metastable refractive index of a‐Si:H that is reversed upon annealing over several cycles using a highly sensitive Fabry–Pérot interferometric technique. Utilizing this technique, a metastable optical switch based on a micro‐ring resonator is demonstrated with reversible distinct switching states separated by 0.3 nm between the light‐soaked and annealed states, a switching extinction exceeding 20 dB and an unchanged Q‐factor, suggesting no excess discernible optical loss. Furthermore, metastable strain changes in a‐Si:H‐based freestanding membrane structures are linked to the observed metastable optical properties and present a possible route to stable photonic devices. Our proof‐of‐concept demonstration showcases a‐Si:H‐based reconfigurable photonics that support multiple purpose photonic integrated circuits, reconfigurable metamaterials, and advanced optomechanical devices.

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“…By using the Vernier effect, an enhancement of FSR by 3 or 4 times was achieved with improved filter roll-off and passband flatness, compared with a single ring case [140]. Recently, a ring response shaping technique was demonstrated via a double-injection circuit design [141,142]. By tuning coupling coefficients between the bus waveguides and the ring resonator, the FSR of the filter response can be flexibly altered from one FSR to 2 times FSR.…”

Section: Integrated Photonic Devices and Emerging Platforms For Imwp Filtersmentioning

confidence: 99%

Integrated microwave photonic filters

et al. 2020

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Microwave signal filtering is a fundamental and central functionality in radio-frequency (RF) systems. Underpinned by advanced integrated photonics technologies, emerging integrated microwave photonic (IMWP) filter platforms enable reconfigurable and widely tunable RF signal filtering functionalities that were unattainable using conventional electronics while also exhibiting superior features in terms of compactness, light weight, stability, low power consumption, and low latency. This paper presents a comprehensive review of the principles, architectures, and performance of IMWP filters. We highlight recent advances of IMWP filters enabled by on-chip nonlinear optics, RF-interference technology and emerging integration platforms, with an emphasis on the RF performance which is critical for their usability in real-world applications. We conclude with a perspective on future research challenges and new possibilities for IMWP filters.

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Response shaping with a silicon ring resonator via double injection

Cited by 54 publications

References 35 publications

Reversibly Programmable Photonics via Responsive Polyelectrolyte Multilayer Cladding

Reversibly Programmable Photonics via Responsive Polyelectrolyte Multilayer Cladding

Metastable Refractive Index Manipulation in Hydrogenated Amorphous Silicon for Reconfigurable Photonics

Integrated microwave photonic filters

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