- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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Performances of Microwave Photonic Notch Filter Based on Microring Resonator with Dual-drive Modulator
摘要： A tunable microwave photonic notch ?lter with ultrahigh radio frequency (RF) rejection ratio is achieved by using a dual-drive Mach–Zender modulator and a microring resonator. In addition, we dedicated to clarify the mechanisms of the microwave photonic notch ?lters based on a microring resonator under both overcoupled and undercoupled states and the performance differences between these two situations are investigated in detail. Furthermore, the experimental results show that the cancellation microwave photonic notch ?lter with ultrahigh RF rejection ratio can be achieved with both undercoupled and overcoupled microring resonators. Besides, an RF rejection ratio exceeding 50 dB was achieved for a microring resonator with an optical extinction ratio of only 4 dB, where a 46-dB enhancement from optical to RF response is obtained. Also, the bandwidth of the microwave photonic ?lter can tuned from 0.65 to 2.2 GHz by adjusting the coupling ratio of the ring resonator. Meanwhile, by tuning the wavelength of the optical carrier, the ?ltering frequency can be tuned and a tuning range of about 25 GHz was achieved. The implementation is much simpler and more economical compared with previous reports and has great potential in monolithic integration of microwave photonic ?lters on chip.
关键词： Optical ?lter,Microwave photonics,Microring resonator,Integrated optics devices
更新于2025-09-23 15:23:52
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Scalable compact mode (de)multiplexer based on asymmetric Y-junctions
摘要： A scalable asymmetric Y-junctions waveguide mode (de)multiplexer ((de)MUX) is theoretically proposed. The high-order mode in the stem is designed to be separated from the lower-order mode and evolves into the fundamental mode in the narrow arm, through waveguide widths optimization by effective index matching and beam propagation method. Within the wavelength range from 1450 to 1630 nm, the four modes (de)MUX with small footprint of 23 × 3.2 μm2 demonstrates the insertion loss and crosstalk of less than 0.14 dB and -16 dB, respectively. This scheme may be expanded to handle more modes in (de)MUX design.
关键词： Waveguides,Integrated optics devices,Modes,Multiplexing
更新于2025-09-23 15:22:29
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A monolithic on-chip magneto-optical isolator with 3 dB insertion loss and 40 dB isolation ratio
摘要： On-chip optical isolators constitute an essential building block for photonic integrated circuits (PICs). Here we experimentally demonstrated a magneto-optical isolator monolithically integrated on silicon featuring 3 dB insertion loss and 40 dB isolation ratio, both of which represent significant improvements over state-of-the-art. The isolator is also fully passive and operates under a simple unidirectional magnetization scheme. Such superior performance is enabled through a three-way combination of a strip-loaded waveguide design, a compositionally optimized chalcogenide glass as the light guiding medium, and low-loss taper structures created via gray-scale lithographic processing. The device represents an important step towards a practical solution for on-chip isolation in PICs.
关键词： Integrated optics devices,Magneto-optical materials,Chalcogenide glass,Resonators,Grayscale-lithography,Isolators
更新于2025-09-23 15:21:21
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[OSA CLEO: Applications and Technology - San Jose, California (2014..-..)] CLEO: 2014 - Compact Athermal Electro-optic Modulator Design Based on SOI Off-axis Microring Resonator
摘要： In this work, we propose efficient electro-optic modulation using compact SOI off-axis microring resonator. We show that adding an extra off-axis inner-ring in conventional microring structure provides control to compensate thermal effects on electro-optic modulator.
关键词： Modulators,Integrated optics devices,Electro-optical devices
更新于2025-09-16 10:30:52
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[IEEE 2019 International Topical Meeting on Microwave Photonics (MWP) - Ottawa, ON, Canada (2019.10.7-2019.10.10)] 2019 International Topical Meeting on Microwave Photonics (MWP) - Wideband and Continuously Tunable Microwave Photonic Phase Shifter Based on an Active InP/InGaAsP Microring Resonator
摘要： We propose and experimentally demonstrate a wideband and continuously tunable microwave photonic (MWP) phase shifter based on an active InP/InGaAsP microring resonator (MRR) incorporating two semiconductor optical amplifiers (SOAs) and a phase modulator (PM). By tuning the gain provided by the SOAs, the loss in the ring cavity can be compensated and the extinction ratio of a resonance is decreased to nearly 0 dB, while maintaining the optical phase shift range within the resonance bandwidth. A theoretical analysis is performed. The key advantages of using the proposed MRR to achieve a microwave phase shifter are that the power variation at the output of the phase shifter is minimized during phase tuning and the microwave phase can be continuously tuned by tuning the PM in the MRR theoretically. The proposed phase shifter is experimentally demonstrated. A continuously tunable microwave phase shift over a phase tuning range of 291° from 5 GHz to 20 GHz by tuning the injection current to the PM is implemented. The microwave power variation is lower than 5 dB.
关键词： integrated optics devices,ring resonators,phase shift
更新于2025-09-12 10:27:22
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[OSA CLEO: Applications and Technology - San Jose, California (2015..-..)] CLEO: 2015 - 56 Gb/s WDM transmitter module based on silicon microrings using comb lasers
摘要： We demonstrate the performance and the reliable fabrication process of a 56 Gb/s wavelength-division multiplexing transmitter module with integrated feedback structures. The device is based on microring silicon depletion modulators, optimized for O-band comb-laser operation.
关键词： Photonic integrated circuits,Modulators,Integrated optics devices
更新于2025-09-11 14:15:04
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[IEEE 2019 IEEE Photonics Conference (IPC) - San Antonio, TX, USA (2019.9.29-2019.10.3)] 2019 IEEE Photonics Conference (IPC) - Multi-Operand Directed Logic-Based Electro-Optic Gates for Ultracompact Optical Computing
摘要： We propose and experimentally demonstrate a multi-operand electro-optic logic gate that allows a single gate to be controlled by several inputs simultaneously. A thorough analysis of its performance is fully implemented, which shows its potential to outperform the traditional logic gate in many aspects. In this paper, we propose and experimentally demonstrate a multi-operand gate and explore the ability in optical computing. The results show that the proposed logic gate is able to outperform the conventional logic gate and achieve an ultracompact optical computing circuit.
关键词： Optical computing,Optical logic devices,Integrated optics devices,Optical logic
更新于2025-09-11 14:15:04
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[IEEE 2018 Asia Communications and Photonics Conference (ACP) - Hangzhou (2018.10.26-2018.10.29)] 2018 Asia Communications and Photonics Conference (ACP) - Highly Linear Graphene Modulator Based on Silicon Waveguide for Integrated Microwave Photonics
摘要： We demonstrated the highly linear graphene modulators based on silicon waveguide employing the electro-absorption and electro-refractive effect of graphene, with the spurious-free dynamic range (SFDR) of 109.55 dB·Hz2/3 and 121.05 dB·Hz2/3 .
关键词： Graphene,Microwave photonics,Silicon modulator,Integrated optics devices
更新于2025-09-11 14:15:04
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Design and Optimization of Proton Exchanged Integrated Electro-Optic Modulators in X-Cut Lithium Niobate Thin Film
摘要： In this study, we designed, simulated, and optimized proton exchanged integrated Mach-Zehnder modulators in a 0.5-μm-thick x-cut lithium niobate thin film. The single-mode conditions, the mode distributions, and the optical power distribution of the lithium niobate channel waveguides are discussed and compared in this study. The design parameters of the Y-branch and the separation distances between the electrodes were optimized. The relationship between the half-wave voltage length production of the electro-optic modulators and the thickness of the proton exchanged region was studied.
关键词： Mach-Zehnder,electro-optic modulator,integrated optics devices,proton exchange,lithium niobate thin film
更新于2025-09-11 14:15:04
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On-chip programmable pulse processor employing cascaded MZI-MRR structure
摘要： Optical pulse processor meets the urgent demand for high-speed, ultra wideband devices, which can avoid electrical con?nements in various ?elds, e.g., all-optical communication, optical computing technology, coherent control and microwave ?elds. To date, great efforts have been made particularly in on-chip programmable pulse processing. Here, we experimentally demonstrate a programmable pulse processor employing 16-cascaded Mach-Zehnder interferometer coupled microring resonator (MZI-MRR) structure based on silicon-on-insulator wafer. With micro-heaters loaded to the device, both amplitude and frequency tunings can be realized in each MZI-MRR unit. Thanks to its recon?gurability and the pulse processor has exhibited integration ability, versatile functions. First, it can serve as a fractional differentiator whose tuning range is 0.51 – 2.23 with deviation no more than 7%. Second, the device can be tuned into a programmable optical ?lter whose bandwidth varies from 0.15 to 0.97 nm. The optical ?lter is also shape tunable. Especially, 15-channel wavelength selective switches are generated.
关键词： all-optical devices,integrated optics devices,optical processing,pulse shaping
更新于2025-09-10 09:29:36