- 标题
- 摘要
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- 实验方案
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Multicore Multimode Fiber-A New Type of Fiber Using Coupled-Core Structures
摘要： A new type of multimode fiber, multicore multimode fiber (MCMMF), which uses coupled multicore structure is proposed. The fiber has a large number of single mode cores with optimized coupling to achieve high bandwidth. A theoretical model for analyzing the MCMMF is developed. The effect of fiber parameters, such as index contrast, core radius, and core spacing on the bandwidth is systematically studied. Numerical simulations show that the bandwidth of a MCMMF can be optimized by choosing correct ratio of core spacing to core radius for a given profile design. In addition, mode coupling among the super-modes can further increase the bandwidth due to the small spacing in effective indices in coupled core structures. A MCMMF with 165 cores is fabricated. High bandwidth of 8.4 GHz·km in the 850 nm window is achieved. Using this fiber and a VCSEL-based 25 Gb/s SR transceiver, error free transmission though 150 m fiber is demonstrated.
关键词： fiber characterization,fiber bandwidth,data center,multimode fiber,Coupled multicore fiber,fiber design,fiber fabrication
更新于2025-09-23 15:21:01
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Accurate Fiber Alignment using Silicon Photodiode on Grating Coupler for Wafer-Level Testing
摘要： A new fiber alignment method for wafer-level testing of silicon photonics devices achieves a high signal-to-noise (S/N) ratio. Using the response from a Si photodiode fabricated directly on a grating coupler and operating it in the avalanche region, we achieved over 4-dB improvement in the S/N ratio for fiber alignment.
关键词： Photonic integrated circuits,Fiber characterization and measurement techniques,Photodiode
更新于2025-09-23 15:19:57
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Noise-Suppressed Distributed Brillouin Sensing Using Plastic Optical Fibers
摘要： We develop a new noise suppression technique to perform distributed strain and temperature sensing based on Brillouin optical correlation-domain reflectometry even when plastic optical fibers are used as sensing fibers.
关键词： Fiber sensing,Fiber characterization and measurement techniques
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Stable Measurement of Near/Far Field Profiles of Coupled Multi-Core Fiber
摘要： A low-coherence method is presented for measuring stable near-field and far-field profiles of coupled multi-core fibers. Stability is achieved by averaging output intensity over wavelength to eliminate time-varying intensity fluctuations caused by coupling and interference.
关键词： Fiber characterization and measurement techniques,Fibers for space division multiplexing
更新于2025-09-16 10:30:52