Samuel Serna

Bridgewater State University

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ÉC

Éric Cassan

Université Paris-Saclay

Laurent Vivien

Université Paris-Sud

Xavier Le Roux

Centre National de la Recherche Scientifique

Weiwei Zhang

University of Southampton

Carlos Alonso‐Ramos

Centre de Nanosciences et de Nanotechnologies

Nicolas Dubreuil

Centre National de la Recherche Scientifique

Delphine Marris‐Morini

Centre de Nanosciences et de Nanotechnologies

Anu Agarwal

Massachusetts Institute of Technology

Luigi Ranno

Massachusetts Institute of Technology

Lionel C. Kimerling

Massachusetts Institute of Technology

Cooperative Institutions

Centre National de la Recherche Scientifique

106

Université Paris-Sud

Université Paris-Saclay

Centre de Nanosciences et de Nanotechnologies

Massachusetts Institute of Technology

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

CEA Grenoble

CEA LETI

Université Grenoble Alpes

Institut polytechnique de Grenoble

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Nonlinear Properties of Hybrid ZnTe-on-Si Waveguides for Telecommunication Applications

Frontiers in Optics + Laser Science 2022 (FIO, LS) (2023)

Katherine Stoll Harish B. Bhandari O. Maksimov Katherine Hansen Lionel C. Kimerling

A novel ZnTe-on-Si waveguide system is presented and demonstrates a reduced TPA coefficient compared to pure silicon with a comparable nonlinear Kerr refractive index to achieve a significantly higher nonlinear FOM TPA for efficient nonlinear applications.

Waveguide

10.1364/fio.2023.jtu4a.86

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When Sight and Cancer Collide: A Rare Case of Paraneoplastic Bilateral Optic Neuritis

Cureus (2023)

Jorge Nadal Bosch Mario Moya Samuel Serna Roberto Alejandro Cruz Javier Malcolm

Bilateral acute optic neuritis is a rare and challenging clinical presentation, often associated with conditions like multiple sclerosis or neuromyelitis optica spectrum disorder. We present the case of a 40-year-old woman with a complex medical history, including poorly differentiated squamous cell carcinoma of the cervix (stage IIIC), who presented with a swift and profound bilateral vision loss. Despite initial treatment with high-dose methylprednisolone and therapeutic plasma exchange, her optic nerve enhancement on MRI and negative autoantibody results raised suspicion of paraneoplastic optic neuritis. This prompted consultation with oncology, and the patient initiated chemotherapy. The rapid onset and progression of bilateral optic neuritis in the context of cervical carcinoma emphasize the importance of considering paraneoplastic syndromes in such cases. A multidisciplinary approach involving neurology, ophthalmology, and oncology specialists is vital for the diagnosis and management of these complex presentations. This case underscores the need for heightened awareness of paraneoplastic etiologies in patients with malignancies and unexplained neurological symptoms.

Optic neuritis

Neuromyelitis Optica

Etiology

10.7759/cureus.49923

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High Density Vertical Optical Interconnects for Passive Assembly

arXiv (Cornell University) (2022)

Drew Weninger Samuel Serna Achint Jain Lionel C. Kimerling Anu Agarwal

The co-packaging of optics and electronics provides a potential path forward to achieving beyond 50 Tbps top of rack switch packages. In a co-packaged design, the scaling of bandwidth, cost, and energy is governed by the number of optical transceivers (TxRx) per package as opposed to transistor shrink. Due to the large footprint of optical components relative to their electronic counterparts, the vertical stacking of optical TxRx chips in a co-packaged optics design will become a necessity. As a result, development of efficient, dense, and wide alignment tolerance chip-to-chip optical couplers will be an enabling technology for continued TxRx scaling. In this paper, we propose a novel scheme to vertically couple into standard 220 nm silicon on insulator waveguides from 220 nm silicon nitride on glass waveguides using overlapping, inverse double tapers. Simulation results using Lumerical's 3D Finite Difference Time Domain solver solver are presented, demonstrating insertion losses below -0.13 dB for an inter-chip spacing of 1 $μ$m, 1 dB vertical and lateral alignment tolerances of approximately $\pm$ 2.7 $μ$m, a greater than 300 nm 1 dB bandwidth, and 1 dB twist and tilt tolerance of approximately 2.3 degrees and 0.4 degrees, respectively. These results demonstrate the potential of our coupler for use in co-packaged designs requiring high performance, high density, CMOS compatible out of plane optical connections.

10.48550/arxiv.2206.09125

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A modular laboratory curriculum for teaching integrated photonics to students with diverse backgrounds

Samuel Serna Nancy Hidalgo Janice Tjan Kevin A. McComber Lionel C. Kimerling

A modular laboratory curriculum with exercises for students and lesson plans for teachers is presented. Fundamentals of basic integrated photonic (IP) devices can be taught, first as a lecture-in-the-lab followed by "hands-on" laboratory measurements. This comprehensive curriculum utilizes data collected from the "AIM Photonics Institute PIC education chip" that was designed specifically for the purpose of education, and was fabricated at AIM SUNY Poly. Training using this modular curriculum will be performed through the AIM Photonics Academy network in New York (NY) and Massachusetts (MA), either as a full semester course or as a condensed boot-camp. A synergistic development and delivery of this curriculum will coherently leverage multiple resources across the network and can serve as a model for education and workforce development in other Manufacturing USA institutes, as well as for overseas partners.

10.1117/12.2523867

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Fabrication and Passive Assembly of Compact, Broadband Substrate-To-Die Evanescent Couplers for Sustainable Pbps Co-Packaged Optics

Drew M. Weninger Samuel Serna Luigi Ranno Lionel C. Kimerling Anu Agarwal

Abstract The co-packaging of optics and electronics provides a potential path forward to achieving Pbps per package data capacities. In a co-packaged design, the scaling of bandwidth, cost, and energy is governed by the number of optical tranceivers per package as opposed to transistor shrink. The scaling of optical transceivers is hindered by the need to actively assemble bulky single mode fiber arrays directly to optical transceivers. The development of efficient, dense optical couplers with wide alignment tolerances allowing for automated, passive assembly will be an enabler for continued scaling in co-packaged designs. To this end, a passively assembled substrate-to-die evanescent coupler between silicon nitride and silicon was experimentally demonstrated with a 0.39 ± 1.06 dB coupling loss at 1550 nm, a 160 nm 1-dB wavelength tolerance (1480–1640 nm), and a 1-dB lateral alignment tolerance of ± 1.56 μm. The thermal stability was evaluated from 23–60°C with average coupling loss and alignment tolerance varying by less than ± 0.35 dB and ± 30 nm, respectively. Finally, repeatability was evaluated across four packaged systems, demonstrating a coupling loss range of 1.5 dB. Together, these results show this coupler can help achieve Pbps co-packaged optics input/output (I/O) within a sustainable envelope.

Integrated Optics

10.1115/ipack2024-140798

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Nonlinear properties of Ge-rich SiGe waveguides (Orale)

HAL (Le Centre pour la Communication Scientifique Directe) (2017)

Samuel Serna Vladyslav Vakarin Joan Manel Ramírez Jacopo Frigerio Andrea Ballabio

We report the first third order nonlinear characterization of Ge-rich Si 1-x Ge x waveguides, with Germanium concentrations ranging from 0.7 to 0.9. A bi-directional top hat D-Scan method was used to determine the waveguide nonlinear parameters and to deduce the Kerr nonlinear refractive index and the two-photon absorption coefficient at the wavelength of 1.58 µm.

Waveguide

Germanium compounds

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Hybrid integration of carbon nanotube emitters into silicon photonic nanoresonators (Conference Presentation)

Éric Cassan Weiwei Zhang Elena Durán‐Valdeiglesias Xavier Le Roux Samuel Serna

Research of integrated light sources into the silicon platform has been extremely active for the past decades. Solutions such as the integration of III / V materials and components on silicon have been developed in a context of pre-industrial research, devices and systems intending very close to the market applications. The germanium(-tin) route has also demonstrated remarkable breakthroughs. The rationales of this research are the realization of optical interconnects. In parallel with these approaches, another interesting research field is the integration of nano-emitters, with the perspective of the realization of classical light sources but also of single photon and photon pair sources, in particular for quantum-on-chip communications. In this context, we propose the use of carbon nanotubes (CNTs) for the integration into silicon photonics towards novel optoelectronic devices. Indeed, CNTs are nanomaterials of particular interest in photonics thanks to their fundamental optical properties including near-IR luminescence, Stark effect, Kerr effect and absorption. Here, we report on the study of the light emission coupling from CNTs into optical nanobeam cavities implemented on the SOI platform. A wide range of situations have been studied by varying the deposition conditions of CNT-doped PFO polymer layers but also by considering different possible geometries of nanobeam cavities. Under optical pumping, we observe a very efficient coupling of the photoluminescence of the nanotubes with the modes of the nanocavities as well as a spectral narrowing of the photoluminescence spectra as a function of the optical power of the pump. These results contribute to the future realization of CNTs lasers, single photon and photon pair sources integrated on silicon. The authors thank the support of the European Commission's FP7-Cartoon project.

Nanophotonics

10.1117/12.2289049

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Sustainable Pbps Co-packaged Optics Using Passively Assembled, Flip-Chip Evanescent Couplers

Springer proceedings in physics (2024)

Drew Weninger Samuel Serna Luigi Ranno Lionel C. Kimerling Anu Agarwal

10.1007/978-3-031-63378-2_25

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Integration of Carbon Nanotubes in Silicon Strip and Slot Waveguide Micro-Ring Resonators

IEEE Transactions on Nanotechnology (2016)

Elena Durán-Valdeiglesias Weiwei Zhang Adrien Noury Carlos Alonso‐Ramos Thi Hong Cam Hoang

Silicon photonics has emerged as a very promising technology platform for the implementation of high-performance, low-cost, ultra-compact circuits that can monolithically cointegrate electronic, opto-electronic and optic functionalities. However, Si neither has efficient light emission or detection in the telecom wavelength range, nor exhibits efficient electro-optic Pockels effect, hindering the implementation of integrated active devices like sources, detectors, or modulators. Current approaches relay on different materials to provide active functionalities in Si photonics, resulting in highly complex integration schemes that compromise cost-effectiveness. Semiconducting single-wall carbon nanotubes (SWNTs) are capable of emitting and detecting near-infrared light at room temperature and exhibit intrinsically fast electro-optic effects. They have also proven promising uses in micro-electronic devices, making them an ideal material to provide active functionalities in the Si photonic platform. In this work, we propose and experimentally validate the possible use of slot photonic waveguides to improve interaction between SWNTs and Si waveguide modes. Fabricated Si slot micro-ring shown an experimental ~ 60% photo-luminescence improvement compared to previous demonstration based on Si strip waveguide resonators. These results prove the potential of Si slot waveguides for the implementation of efficient SWNT-based Si photonic devices.

Waveguide

Nanophotonics

10.1109/tnano.2016.2556225

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Citations (12)

Building blocks of silicon photonics

Semiconductors and semimetals (2019)

Laurent Vivien Charles Baudot F. Bœuf Bertrand Szelag Carlos Alonso‐Ramos

Silicon chip

10.1016/bs.semsem.2019.07.006

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Citations (5)