- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Low-loss Multimode Glass Waveguides with Beam-Expanded Fiber Connectors Enabling On-Board Optical Links
摘要： Ion-exchange glass waveguides are a very promising technology with a balanced trade-off between optical loss, integration density and fabrication costs. Graded-index multimode waveguides show low propagation loss of only 0.035 dB/cm at wavelength of 1310 nm in glass compatible with large scale manufacturing. For fiber cable connectivity, expanded beam connectors were used to terminate the waveguides by passive pick-and-place assembly, resulting in a coupling loss of ~1 dB per interface. Design and fabrication of glass waveguides are studied, and two-meter-long spiral waveguides along with 12 x 12 optical shuffle waveguide layouts made on a 9” x 12” area glass sheet are demonstrated experimentally.
关键词： Lensed Connector,Glass,Electro-Optical PCB,Optical Interconnect,Ion-exchange
更新于2025-09-12 10:27:22
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[IEEE 2019 21st International Conference on Transparent Optical Networks (ICTON) - Angers, France (2019.7.9-2019.7.13)] 2019 21st International Conference on Transparent Optical Networks (ICTON) - Erbium-Doped Polymer Waveguide Amplifiers for Board-Level Optical Interconnects
摘要： Optical interconnects have an important role to play in next-generation high-performance electronic systems by enabling power-efficient high-speed board-level communication links. Polymer-based optical waveguides is a leading technology for integrating optical links onto standard printed circuit boards as it is sufficiently low cost and enables cost-effective manufacturing and assembly. Various polymer-based optical backplanes have been reported in recent years enabling different on-board interconnection architectures. However, all currently demonstrated systems are purely passive, which limits therefore the reach, complexity and functionality of these on-board systems. Here, we present recent simulation and experimental studies towards the development of Er-doped polymer-based waveguide amplifiers. Two different approaches to integrate Er-doped materials in siloxane polymer are investigated: (i) ultrafast laser plasma implantation of Er-doped glasses and (ii) solution-based dispersion of Er-doped nanoparticles. Experimental and simulation results on the achievable performance from such waveguide amplifiers are presented focusing on impact of the waveguide loss and upconversion on the gain figure.
关键词： EDWA,upconversion,polymer,optical interconnect,erbium
更新于2025-09-12 10:27:22
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Analysis of Optical Integration between Si3N4 Waveguide and a Ge-Based Optical Modulator Using a Lateral Amorphous GeSi Taper at the Telecommunication Wavelength of 1.55 μm
摘要： We report on the theoretical investigation of using an amorphous Ge0.83Si0.17 lateral taper to enable a low-loss small-footprint optical coupling between a Si3N4 waveguide and a low-voltage Ge-based Franz–Keldysh optical modulator on a bulk Si substrate using 3D Finite-Difference Time-Domain (3D-FDTD) simulation at the optical wavelength of 1550 nm. Despite a large refractive index and optical mode size mismatch between Si3N4 and the Ge-based modulator, the coupling structure rendered a good coupling performance within fabrication tolerance of advanced complementary metal-oxide semiconductor (CMOS) processes. For integrated optical modulator performance, the Si3N4-waveguide-integrated Ge-based on Si optical modulators could simultaneously provide workable values of extinction ratio (ER) and insertion loss (IL) for optical interconnect applications with a compact footprint.
关键词： Franz–Keldysh effect,germanium,optical interconnect,silicon nitride
更新于2025-09-11 14:15:04
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FSCOI: A High Fan-out, Scalable, and Cluster-based Optical Interconnect for Data Center Networks
摘要： In this letter, a high fan-out, scalable, and cluster-based optical interconnect (FSCOI) for data center networks is proposed. FSCOI is consisted of an optical switch and clusters. Compared to OSA, the improved fan-out of FSCOI is achieved by two steps. The first is a coupler for sending can multiplex the optical signals from all top-of-rack (ToR) switches that are within a cluster. The second is a wavelength selective switch for receiving can talk to all ToR switches within the cluster. FSCOI is based on cluster, and it is suited to intra-cluster traffic. In addition, the high scalability is achieved by increasing the port usage efficiency of the optical switch. Its performance is evaluated by simulations. Extensive results demonstrate FSCOI has better performance in comparison to OSA.
关键词： cluster,data center networks,scalability,optical interconnect,fan-out
更新于2025-09-09 09:28:46
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The Measurement of Optical Interconnect Module Post-Soldering Alignment Offsets and The Study of Its Influence on Optical Coupling Efficiency
摘要： In the process of the optical interconnection module soldering assembly, the mismatch of the thermal expansion coefficient between the substrate and PCB would result in the production of alignment offset between light source devices and light-coupled devices, which would lead to light power loss. It is of great significance to study on the optical interconnect module alignment offset in the assembly process to improve optical interconnect module coupling efficiency. In the present study, an optical interconnection module key position post soldering shift offset measurement system was established, and an optical interconnection module experimental sample was prepared. The key position post soldering shift in the X and Y directions were measured. The 3D finite element analysis model of a typical optical interconnect module was established, and post soldering shift offsets were calculated after the finite elements analysis of the reflow soldering temperature load. The coupling efficiency simulation model of the optical interconnection module was established using the ZEMAX software, and the coupling efficiency was calculated according to the alignment offset measured in the experiment. The results revealed the following: The post soldering alignment offsets in the X and Y direction were 0.316 μm and 0.422 μm, respectively, and the synthetic alignment offset was 0.527 μm. The post soldering alignment offset calculated using the finite element simulation model was 0.436 μm, and its error was 17.2%, when compared with the measured value. The coupling efficiency of the optical interconnection module was 85.804% when the post soldering alignment offset was 0.527 μm.
关键词： Reflow soldering,Optical interconnect module,Multimode fiber,Alignment offset,Coupling efficiency
更新于2025-09-09 09:28:46
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H2OEIN: A Hierarchical Hybrid Optical/Electrical Interconnection Network for Exascale Computing Systems
摘要： The performance of high-performance computing (HPC) systems is largely determined by the interconnection network. The rising demand for computing capability leads to an expansion of the interconnection network and a corresponding increase in system cost and power consumption. The growing use of optical interconnects not only reduces the network cost and power consumption, but also meets the system-scaling bandwidth demands. However, unlike in an electrical switch, the lack of a buffer in the optical switch makes it hard to operate an all-optical network at packet-level granularity. In this paper, we propose a hierarchical hybrid optical/electrical interconnection network (H2OEIN) based on low-radix switches and arrayed waveguide grating routers (AWGRs). In the lower layers, the use of low-radix switches results in lower cost and power consumption. The modular structure composed of low-radix switches facilitates the expansion of the network. At higher layers, high bandwidth and fast switching can be achieved using AWGR based optical interconnects. Because the higher layers of the network are passive, the power consumption can be reduced to a large extent. Network simulation results show that H2OEIN reduces the cost by 25% and the power consumption by 45% compared to a dragon?y network in con?gurations with over 300,000 nodes.
关键词： Optical interconnect,routing algorithm,topology,Exascale computing
更新于2025-09-09 09:28:46
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[IEEE 2018 IEEE Photonics Conference (IPC) - Reston, VA, USA (2018.9.30-2018.10.4)] 2018 IEEE Photonics Conference (IPC) - Low-Loss Wafer-Scale Silicon Photonic Interposer Utilizing Inverse-Taper Coupler
摘要： This paper experimentally demonstrates a low loss inter-chip coupler with coupling loss below 1dB utilizing inverse-taper coupling from a wafer scale silicon photonic interposer, designed to distribute laser emission to 100 photonic integrated circuit dies (PICs) with equal power and phase. During the packaging, PICs are flip-chip bounded onto the interposer to achieve electrical, optical, and thermal coupling.
关键词： Optical interconnect,Optical package,Optical coupler,Silicon photonics,Photonics integrated circuit,Nanofabrication
更新于2025-09-04 15:30:14
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Time-aware Software Defined Networking for OpenFlow-based Datacenter Optical Networks
摘要： Data center networks are considered to make use of the computing and storage resources in data centers, which include intra-datacenter and inter-datacenter networks. Both of them will depend on the optical networking due to its advantages, such as low latency, high bandwidth, and low energy consumption. Data center interconnected by flexi-grid optical networks is a promising scenario to allocate spectral resources for applications in a dynamic, tunable and efficient control manner. Due to the high burstiness and high-bandwidth characteristics of the services, optical interconnect in intra-datacenter networks has attracted much attention compared with inter-datacenter network. Many datacenter applications in the environment require lower delay and higher availability with the end-to-end guaranteed quality of service. In this paper, we propose a novel time-aware software defined networking (TaSDN) architecture for OpenFlow-based datacenter optical networks, by introducing a time-aware service scheduling (TaSS) strategy. TaSDN can arrange and accommodate the applications with required QoS considering the time factor, and enhance the responsiveness to quickly provide for datacenter demand. The overall feasibility and efficiency of the proposed architecture are experimentally verified on our testbed with OpenFlow-based intra-datacenter and inter-datacenter optical networks.
关键词： time-aware,software defined network,OpenFlow,optical interconnect,data center network,flexi-grid optical network
更新于2025-09-04 15:30:14