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High-Power Stability and Reliability of Polymer Optical Waveguide for Co-Packaged Optics
Satoshi Suda;Akihiro Noriki;Haruhiko Kuwatsuka;Fumi Nakamura;Yuki Atsumi;Takayuki Kurosu;Tadashi Murao;Takeru Amano
Journal of Lightwave Technology
Year: 2025 | Early Access Article |
This paper explores the fundamental optical characteristics and high-power handling capabilities of single-mode polymer waveguides fabricated on glass-epoxy substrates for co-packaged optics (CPO) utilizing external laser sources (ELS). The waveguides exhibit low polarization-dependent loss (PDL) of less than 0.5 dB and low differential group delay (DGD) of less than 0.2 ps in the O-band, along wi...Show More
Ultra-Fast Self-Adaptive Phase-Error Calibration for Dual MZI-based Silicon Photonic Switch Fabric
Satoshi Suda;Hiroyuki Matsuura;Keijiro Suzuki;Kazuhiro Ikeda;Shu Namiki;Fumi Nakamura;Akihiro Noriki;Tadashi Murao;Takeru Amano
ECOC 2024; 50th European Conference on Optical Communication
Year: 2024 | Conference Paper |
Fully automatic phase-error calibration across a 256 dual Mach-Zehnder-interferometers-based 8×8 non-blocking silicon photonic switch fabric with polarization diversity was demonstrated. We achieve an ultra-fast and highly accurate calibration by only sampling 3.6 measurement points for one switch state, close to the theoretical limit of 3.Show More
1.6 Tbps Coarse-Wavelength-Division-Multiplexing O/E Converter for Active Optical Package
Naoki Matsui;Akihiro Noriki;Haruhiko Kuwatsuka;Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Takeru Amano;Satoshi Ishikawa;Hiromichi Yoshikawa;Reona Motoji;Dan Maeda;Tomoya Sugita;Hirotaka Uemura
ECOC 2024; 50th European Conference on Optical Communication
Year: 2024 | Conference Paper |
We developed a 1.6 Tbps optical/electrical (O/E) converter with an organic interposer. This converter supports coarse-wavelength-division multiplexing and includes polarization insensitive receiver circuits. It embeds all photonic functions into a package substrate, paving the way for a new class of co-packaged optics.Show More
1.6 Tbps Coarse-Wavelength-Division-Multiplexing O/E Converter for Active Optical Package
Naoki Matsui;Akihiro Noriki;Haruhiko Kuwatsuka;Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Takeru Amano;Satoshi Ishikawa;Hiromichi Yoshikawa;Reona Motoji;Dan Maeda;Tomoya Sugita;Hirotaka Uemura
Year: 2024 | Conference Paper |
Thermal Analysis of Reflow Process for PIC-Embedded Package Substrate with 2.3D RDL Interposer for Co-Packaged Optics
Akihiro Noriki;Hirotaka Uemura;Haruhiko Kuwatsuka;Naoki Matsui;Reona Motoji;Dan Maeda;Tomoya Sugita;Fumi Nakamura;Takeru Amano
2024 International 3D Systems Integration Conference (3DIC)
Year: 2024 | Conference Paper |
Toward a next generation co-packaged optics (CPO), we have worked on a novel package substrate in which photonics integrated circuits (PICs) are embedded. The substrate can be provided as known good package substrate with optoelectronic conversion function and can be assembled in the same condition as conventional package substrates. In addition, the substrate realizes high-density optical assembl...Show More
Co-Design of Photonic IC, Electronic IC, and Interposer for 1.6 Tbps O/E Converter in Active Optical Package
Naoki Matsui;Akihiro Noriki;Haruhiko Kuwatsuka;Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Takeru Amano;Satoshi Ishikawa;Hiromichi Yoshikawa;Reona Motoji;Dan Maeda;Tomoya Sugita;Hirotaka Uemura
2024 IEEE CPMT Symposium Japan (ICSJ)
Year: 2024 | Conference Paper |
Co-Design of Photonic IC, Electronic IC, and Interposer for 1.6 Tbps O/E Converter in Active Optical Package
Naoki Matsui;Akihiro Noriki;Haruhiko Kuwatsuka;Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Takeru Amano;Satoshi Ishikawa;Hiromichi Yoshikawa;Reona Motoji;Dan Maeda;Tomoya Sugita;Hirotaka Uemura
Year: 2024 | Conference Paper |
Scalable Fabrication of 3D Optical Re-distribution for Co-Packaged Optics using an Developed Nanoimprint Stepper
Fumi Nakamura;Kenta Suzuki;Akihiro Noriki;Satoshi Suda;Takayuki Kurosu;Takeru Amano
2024 IEEE 74th Electronic Components and Technology Conference (ECTC)
Year: 2024 | Conference Paper |
For high-density Co-packaged optics, we have proposed an active-optical package substrate, in which silicon photonics are embedded in the substrate with mirror-based optical re-distribution. In this study, imprint technology was introduced for fabricating micro-mirrors to enable high-throughput formation. The novel imprint stepper was developed, and the fabrication of micro-mirrors was demonstrate...Show More
Development of all-photonics-function embedded package substrate using 2.3D RDL interposer for co-packaged optics
Akihiro Noriki;Hirotaka Uemura;Haruhiko Kuwatsuka;Naoki Matsui;Reona Motoii;Dan Maeda;Tomoya Sugita;Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Takeru Amano
2024 IEEE 74th Electronic Components and Technology Conference (ECTC)
Year: 2024 | Conference Paper |
Toward a next generation co-packaged optics, we have worked on a novel packaging substrate working as optoelectronic conversion engine and providing optical redistribution function and detachable optical connector. In this paper, we show design of the test vehicle using 2.3D RDL interposer and provide its thermal and electrical analysis results.Show More
Thermal Characteristics of Mirror-Based Optical Redistribution for Co-Packaged Optics
Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Yasuhiro Ibusuki;Akihiro Noriki;Akio Ukita;Koichi Takemura;Tsuyoshi Aoki;Takeru Amano
Journal of Lightwave Technology
Cited by: Papers (2)
Because traffic toward and inside datacenters is increasing, the power consumption of electrical wiring in ethernet switches for datacenter should be addressed. Co-packaged optics (CPO) is a promising solution, where optical components are integrated into the same package substrate as electrical elements. We have proposed one of the CPO modules, where micro-mirror- based optical redistribution is ...Show More
Analyzing Thermal Tolerance of Mirror-based Optical Redistribution for Co-packaged Optics
Fumi Nakamura;Satoshi Suda;Takayuki Kurosu;Yasuhiro Ibusuki;Akihiro Noriki;Isao Tamai;Akio Ukita;Koichi Takemura;Tsuyoshi Aoki;Takeru Amano
2022 Conference on Lasers and Electro-Optics (CLEO)
Year: 2022 | Conference Paper |
Cited by: Papers (2)
Design of a Hybrid Wavelength Selective Crossconnect Utilizing a Silicon Optical Switch Array
Yuki Moriya;Fumi Nakamura;Kunio Kobayashi;Hitoshi Kawashima;Haoshuo Chen;Hiroyuki Tsuda
2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
Impact of Cascaded Multi-Band 1×2 Photonic Integrated WSS in Metro-Access Networks
Rafael Kraemer;Menno van Den Hout;Sjoerd van der Heide;Henrique Santana;Yu Wang;Fumi Nakamura;Hiroyuki Tsuda;Antonio Napoli;Chigo Okonkwo;Nicola Calabretta
2021 Opto-Electronics and Communications Conference (OECC)
Year: 2021 | Conference Paper |
Photonic integrated WDM switches and filters for ultra-wideband (O to L) optical networks
N. Calabretta;R. Kraemer;Yu Wang;A. Napoli;F. Nakamura;H. Tsuda;K. Prifti;B. Srivathsa;G. Delrosso;T. Aalto;H. Jung;J. Shin;N. Tessema
2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
We experimentally demonstrate multi-band (O- to L-band) monolithic and hybrid photonic integrated wavelength selective switches with fast switching and different data format and data-rates for flexible low-cost 5G/6G optical metro and access distribution networks. We also present results on photonic integrated multiband optical cross-connect switches.Show More
Multi-Band Photonic Integrated Wavelength Selective Switch
Rafael Kraemer;Fumi Nakamura;Menno van den Hout;Sjoerd van der Heide;Chigo Okonkwo;Hiroyuki Tsuda;Antonio Napoli;Nicola Calabretta
Journal of Lightwave Technology
Cited by: Papers (25)
As fiber-optic systems turn toward multi-band transmission (MBT), exploiting the complete low loss window of optical fibers, novel optical components, able to operate in bands other than the conventional C-band, become necessary. In light of this, we report on a multi-band photonic integrated $\mathbf {1\times 2}$ wavelength selective switch (WSS) operating in the O, S, C and L-bands. The photonic...Show More
Silicon Based 1 × M Wavelength Selective Switch Using Arrayed Waveguide Gratings With Fold-Back Waveguides
Fumi Nakamura;Hideaki Asakura;Keijiro Suzuki;Ken Tanizawa;Minoru Ohtsuka;Nobuyuki Yokoyama;Kazuyuki Matsumaro;Miyoshi Seki;Kazuhiro Ikeda;Shu Namiki;Hitoshi Kawashima;Hiroyuki Tsuda
Journal of Lightwave Technology
Cited by: Papers (9)
The design of a novel 1 × M fold-back type wavelength selective switch (WSS), which has fewer waveguide crossings than a conventional integrated WSS, is reported. The WSS is composed of interleavers, 1 × M optical switches, and arrayed waveguide gratings (AWGs). Switches are combined with AWGs by fold-back waveguides, and each AWG works as both a demultiplexer and multiplexer thus avoiding center ...Show More
S-, C- and L-Band Photonic Integrated Wavelength Selective Switch
2020 European Conference on Optical Communications (ECOC)
Year: 2020 | Conference Paper |
Cited by: Papers (4)
High Extinction Ratio and Low Crosstalk C and L-Band Photonic Integrated Wavelength Selective Switching
R. Magalhães Gomes Kraemer;F. Nakamura;Yu Wang;H. Tsuda;N. Calabretta
2020 22nd International Conference on Transparent Optical Networks (ICTON)
Year: 2020 | Conference Paper |
Cited by: Papers (9)
A photonic integrated 1×2 Wavelength Selective Switch (WSS) based on a loopback configuration is shown to operate on the C and L-Bands due to the cyclic nature of the employed arrayed-waveguide gratings (AWGs). An average of -22.59 dB and -20.40 dB were observed in the C and L-band channels respectively. Crosstalk levels are kept below -40 dB on the output port A and below -30 dB on output port B....Show More
Experimental Assessments of a Flexible Optical Data Center Network Based on Integrated Wavelength Selective Switch
X. Xue;F. Nakamura;K. Prifti;B. Pan;F. Yan;F. Wang;X. Guo;H. Tsuda;N. Calabretta
2020 Optical Fiber Communications Conference and Exhibition (OFC)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
Characteristics of 1×2 Silicon Wavelength Selective Switch Using Arrayed - Waveguide Gratings with Fold-Back Waveguides
Fumi Nakamura;Hideaki Asakura;Keijiro Suzuki;Ken Tanizaawa;Minoru Ohtsuka;Nobuyuki Yokoyama;Kazuyuki Matumaro;Miyoshi Seki;Kazuhiro Ikeda;Shu Namiki;Hitoshi Kawashima;Hiroyuki Tsuda
2019 18th International Conference on Optical Communications and Networks (ICOCN)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
Characteristics of 1×2 Silicon Wavelength Selective Switch Using Arrayed - Waveguide Gratings with Fold-Back Waveguides
Fumi Nakamura;Hideaki Asakura;Keijiro Suzuki;Ken Tanizaawa;Minoru Ohtsuka;Nobuyuki Yokoyama;Kazuyuki Matumaro;Miyoshi Seki;Kazuhiro Ikeda;Shu Namiki;Hitoshi Kawashima;Hiroyuki Tsuda
Year: 2019 | Conference Paper |
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