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Four-Way Spoof Surface Plasmon Polaritons Splitter/Combiner
摘要： Corrugated metal with period grooves supports spoof surface plasmons polariton (SSPP) wave in microwave and terahertz ranges. In this letter, a four-way SSPP splitter/combiner with oval-ring periodic structures is presented by using a single connection junction. Up to the authors’ best knowledge, a four-way SSPP splitter/combiner is never reported in the literature. In order to verify the performance of the mentioned SSPP splitter/combiner, we have manufactured and tested the presented SSPP splitter/combiner. The simulation and measurement results demonstrate that the designed conversion between a single coplanar waveguide junction and four SSPP waveguides is high efficiency. The SSPP splitter equally separates the electromagnetic wave into four paths. Hence, the proposed four-way splitter is expected to develop the SSPP active and passive components and relative integrated circuits.
关键词： spoof surface plasmon polariton (SSPP),four-way splitter/combiner,Coplanar waveguide (CPW)
更新于2025-09-23 15:23:52
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Design of GaN-Based Low-Loss Y-Branch Power Splitter
摘要： We present a Y-branch power splitter design with a multimode section using GaN on Sapphire at telecommunication wavelength. The GaN sample optical properties were also investigated, resulting in a refractive index for the GaN layers nTE=2.289±0.001 and nTM=2.324±0.00. Optimization of the structure parameters for this structure was conducted accurately using BPM methods. The results demonstrated the possibility of realizing a GaN-based Y-branch power splitter for various applications.
关键词： waveguide,telecommunication,Y-branch,GaN,power splitter
更新于2025-09-23 15:23:52
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Novel research on reliability of silica-based PLC optical splitters
摘要： Environmental, mechanical and optical reliability are basic premises for application of PLC optical splitters. According to temperature and humidity cycling experiment, it demonstrated that insertion loss of PLC optical splitter varies with temperature. Compared to performance at room temperature, the maximum insertion loss change of device is 0.472 dB at 75 °C, and 0.486 dB at ?40 °C. A three-dimensional ?nite element model of PLC chip coupled with ?ber array was established to study the e?ects of temperature on insertion loss. The simulation results match experimental results, indicating that misalignment of PLC chip and ?ber array is the main reason for insertion loss change. It is signi?cant to consider the in?uences of global temperature rather than only paying attention to performance at static temperature when we evaluate the reliability of PLC optical splitters.
关键词： PLC optical splitter,Temperature and humidity,Finite element method,Optical waveguide,Reliability
更新于2025-09-23 15:23:52
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Characterization of beam splitters in the calibration of a six-channel Stokes polarimeter
摘要： Polarization distortion in a beam splitter is a phenomenon where the polarization state of output light deviates from the theoretical expectation, which is inevitable and will result in significant errors in the optical systems. A theoretical analysis method based on Mueller matrix ellipsometry is proposed for characterizing the beam splitters and the application in the calibration of a six-channel Stokes polarimeter (SP) is shown. In this study, polarization distortions in the beam splitters including depolarization, linear birefringence, circular birefringence, linear dichroism, and circular dichroism have been considered. With the proposed method, the beam splitters are characterized by the polarization distortions and the effective optical parameters extracted. In our experiment, the Mueller matrices of two different commonly used beam splitters measured by a commercial Mueller matrix ellipsometer (MME) are consistently fitted by the proposed method and the residual errors have shown improvement compared to the conventional methods. A practical application of the proposed method is exhibited by calibrating a SP system containing two non-polarization beam splitters and three polarization beam splitters. With the proposed method introduced, the general error of the measured Stokes vector can be reduced from 3% to 1%, and the errors of the thickness measurement of standard SiO2 thin film samples are within 1 nm compared with the results reported by a commercial MME.
关键词： beam splitter,characterization,calibration,Stokes polarimeter,polarization distortion
更新于2025-09-23 15:23:52
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Numerical evaluation of the optical-splitter system efficiency using a TCO as optical splitter
摘要： In the present work, we simulate the J-V characteristic of a solar cell combination to evaluate the efficiency in an optical splitter system. Two different transparent conductive oxides (TCO) were used as splitters (ITO and SnO2:F). The spectral response of the TCOs was modeled according to Drude's theory, using different concentration values. Then, the J-V characteristics of the cells were simulated by SCAPS 1-D, using the spectra obtained for each TCO by superimposing the spectral response on the solar spectrum. The results indicate that solar cells can achieve efficiencies in the system above 17 % using ITO as splitter with a positive gain for both solar cells.
关键词： splitter system,solar cell simulation,TCO,SCAPS
更新于2025-09-23 15:23:52
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[ACM Press the 2017 International Conference - Osaka, Japan (2017.10.22-2017.10.24)] Proceedings of the 2017 International Conference on Telecommunications and Communication Engineering - ICTCE '17 - Design of a four-branch optical power splitter using III-nitride semiconductors
摘要： This paper reports the design of a four-branch optical power splitter using MMI structure and taper output branches in III-nitride semiconductors. The numerical experimental is conducted using the 3D FD-BPM method. The results show that the optical power splitter has an excess loss of 0.27 dB and imbalance of 0.12 dB. It is also shown that the proposed design can be realized for C band range. This result opens the opportunity for the future device using this technology.
关键词： FD-BPM method,MMI structure,optical power splitter,III-nitride
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE 15th International Conference on Group IV Photonics (GFP) - Cancun (2018.8.29-2018.8.31)] 2018 IEEE 15th International Conference on Group IV Photonics (GFP) - Ultra Low Loss Asymmetric Multimode Interference Power Splitters
摘要： Ultra low loss arbitrary-ratio multimode interference (MMI) splitters are realized by utilizing tilted tapers with minimum excess loss predicted to be 0.05dB and the maximum no more than 0.215dB. the comparison in Fig1(b), (c) and (d), the joggle phenomenon is eased by using tilted tapers and the corresponding excess loss is also reduced.
关键词： multimode interference,arbitrary-ratio power splitter,Silicon Photonics
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE 15th International Conference on Group IV Photonics (GFP) - Cancun (2018.8.29-2018.8.31)] 2018 IEEE 15th International Conference on Group IV Photonics (GFP) - Optimization of a Polarization Beam Splitter for Broadband Operation using a Genetic Algorithm
摘要： We present a design method for a polarization beam splitter for broadband operation based on a genetic algorithm (GA). The devices are segmented into short sections, where the geometric parameters for each device are determined using a GA.
关键词： genetic algorithm,silicon photonics,directional coupler,broadband,optimization,beam splitter
更新于2025-09-23 15:22:29
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Design of silicon waveguide polarization beam splitter based on reversed ?? <i>?2</i> directional coupler
摘要： We report a directional coupler type polarization beam splitter using silicon waveguides designed for 1550–1600 nm wavelengths. The device uses the coupling strength difference between the TE and TM modes. We use a reversed Δβ structure to achieve a wide operational wavelength range. The gap between the waveguides needs to be wide enough to attain a sufficient extinction ratio for the TE mode. Simulation results show that an over 100 nm operational 20 dB extinction ratio wavelength range can be attained at 1520–1620 nm wavelengths by this simple structure. The fabrication width tolerance exceeds 10 nm which is enough for foundry processes.
关键词： polarization beam splitter,silicon waveguide,directional coupler,TE and TM modes,reversed Δβ structure
更新于2025-09-23 15:21:01
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TERAHERTZ BEAM SPLITTER BASED ON I-SHAPED METASURFACE
摘要： A linear polarization beam splitter operating in terahertz band is proposed and experimentally veri?ed in this paper. The unit cell of the beam splitter is composed of the top “I” type metal pattern, the middle dielectric layer, and the bottom metal layer. Each subarray structure of the device consists of four unit cells that rotate progressively at an angle of 45?. The horizontal and vertical sub-arrays form the gradient metasurface of 4 × 4. The incident linear polarized terahertz wave is re?ected by the device and divided into four beams with approximately equal power, while having di?erent propagating directions in the 0.18–0.30 THz band. The proposed terahertz beam splitter has the advantages of small size, low cost, and easy processing, and it can be applied to terahertz stealth and terahertz imaging.
关键词： terahertz,polarization,beam splitter,metasurface
更新于2025-09-23 15:21:01