Article
Engineering, Electrical & Electronic
Ping Zhao, Magnus Karlsson, Peter A. Andrekson
Summary: Low-noise optical amplifiers like compact, waveguide-based, parametric amplifiers utilizing four-wave mixing process have been pursued. An analytic model for phase-sensitive parametric amplifiers based on nonlinear optical waveguides is presented, considering the impact of linear loss. Si3N4 waveguides show potential for achieving 28 dB gain with a 0.8 dB noise figure, with research focusing on improving performance through cross-section design.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Stefanos Kovaios, Apostolos Tsakyridis, George Giamougiannis, Konstantinos Fotiadis, Davide Sacchetto, Michael Zervas, Miltiadis Moralis-Pegios, Nikos Pleros
Summary: This paper presents the experimental performance of 3 x 3 and 4 x 4 Generalized Mach Zehnder Interferometers (GMZI) integrated on the Si3N4 waveguide platform, serving as switching and variable power splitting modules. The GMZI structures exhibit resonant spectral behavior and low insertion losses.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Mandan Luo, Qing Yang, Ning Chen, Wei Liao
Summary: This paper studies an integrated optical waveguide current sensor based on silicon photonics and magneto-optical materials, achieving energy coupling between the micro-ring resonator and the magneto-optical thin film through the magneto-optical nonreciprocity effect, and obtaining current information through a Mach-Zehnder interferometer.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Jada Ravi, Avulu Vinod Kumar, Durga Prasad Karothu, Mari Annadhasan, Pance Naumov, Rajadurai Chandrasekar
Summary: This study describes the construction of silicon-free, all-organic photonic integrated circuits by micromanipulation of two mechanically different organic crystals with complementary optical properties. The results show the infinite structural variations in optical microstructures that can be achieved using organic crystals, highlighting the untapped potential for lightweight all-organic optical minicircuitry with deformable light-transducive crystals.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
T. Moschos, C. Pappas, G. Mourgias-Alexandris, T. Alexoudi, C. Vagionas, A. Miliou, N. Pleros
Summary: This article demonstrates an all-optical bistable monolithically integrated photonic waveguide memory of distinctive simplicity for the first time. It relies on two travelling waveguide Semiconductor Optical Amplifiers with Cross Gain modulation (SOA-XGM) phenomena, showcasing fast photonic memory unit potential.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Chaochao Ye, Chanju Kim, Yi Zheng, Yueguang Zhou, Ayman N. Kamel, Yanjing Zhao, Kresten Yvind, Minhao Pu
Summary: Microresonator-based optical frequency combs have wide-ranging applications and require dispersion control for soliton generation. Mode crossing in microresonators can disrupt dispersion and distort the comb spectrum. We present a robust waveguide design to suppress unintended mode crossing by manipulating the phase mismatch between coupling modes, demonstrated experimentally in the AlGaAs-on-insulator platform.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Haoxiang Chen, Qike Sun, Junqing Wang, Jianhong Yang, Hao Jia
Summary: This paper investigates the coupling strategy in the silicon-based dual-waveguide coupled-mode system and proposes a method to change the transmission coefficient by adjusting the mode coupling between waveguides. By customizing the dispersion curves of the waveguides through temperature control, the coupling coefficient can be changed without altering the waveguide geometry. Prototype of variable optical attenuators for different modes is demonstrated, and different interference patterns can be generated by cascading mode converters. A reconfigurable optical tweezer capable of manipulating nanoscale particles is also demonstrated. This methodology has potential applications in flexible multimode optical networks and labs on chip.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Fu-Li Hsiao, Chia-Ying Ni, Ying-Pin Tsai, Ting-Wei Chiang, Yen-Tung Yang, Cheng-Jui Fan, Hsuan-Ming Chang, Chien-Chung Chen, Hsin-Feng Lee, Bor-Shyh Lin, Kai-Chun Chan, Chii-Chang Chen
Summary: Photonic crystals with unique dispersion relation can be used to design miniaturized optical components for quantum computing. A half-waveplate element with a photonic crystal is designed to rotate the polarization direction of incident light on a waveguide. The polarization rotation length and the optical axis's angle can be effectively calculated using the dispersion relation of photonic crystals. Polarization rotators designed based on photonic crystal structures exhibit low insertion loss and favorable polarization rotation performance.
Article
Optics
Hongru Zhang, Guofang Fan, Shi Li, Gaoshan Jing, Yuan Li, Zhiping Zhang
Summary: In this paper, an optical waveguide microcantilever sensor with a dual-output waveguide readout is developed for obtaining a linear response to the deflection of the cantilever. The optical waveguide microcantilever sensor is characterized using the finite element method. A systematic and detailed discussion is presented on the design and unique results of the optical waveguide cantilever sensor with a dual-output waveguide. The study shows interesting and divergent results from general opinions, highlighting the trade-off between sensitivity, linearity, and operation range. These findings are valuable for optimizing the design of microcantilever sensors.
OPTICS COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Jiu Hong Jia, Ze Hou Wang, Dai Feng Yao, Shan-Tung Tu
Summary: Piezoelectric waveguide transducers have great potential for online monitoring of high temperature critical components, utilizing a waveguide bar for reliable and long-term service. Experimental results suggest that brazing coupling method can effectively propagate waves and enhance coupling effects, suitable for high temperature environments.
Article
Polymer Science
Jiachen Han, Xihan Wu, Xuyang Ge, Yuqi Xie, Guoming Song, Lu Liu, Yunji Yi
Summary: This paper presents a polymer Mach-Zehnder interferometer (MZI) optical sensor based on a slot structure and a suspended structure. The sensor achieves high sensitivity and detection resolution, outperforming other waveguide structures.
Article
Optics
Giacomo Balistreri, Alessandro Tomasino, Junliang Dong, Aycan Yurtsever, Salvatore Stivala, Jose Azana, Roberto Morandotti
Summary: This work discusses the time-domain integration of broadband terahertz pulses using a tapered two-wire waveguide (TTWWG). It demonstrates that input THz pulses are reshaped into their first-order time integral waveform as they propagate toward the subwavelength output gap. The results pave the way for developing a broadband, analog THz time integrator device for high-speed signal processing in THz communication systems.
LASER & PHOTONICS REVIEWS
(2021)
Article
Engineering, Electrical & Electronic
Jose Roberto Rausell Campo, Daniel Perez-Lopez
Summary: This article discusses the implementation of nonlinear activation functions in optical neural networks and compares the response of different electro-optic architectures. The study demonstrates that ring assisted MZI and two-ring assisted MZI have the highest expressivity among the proposed structures. The article also presents a quantitative analysis of the capabilities of optical devices to mimic state-of-the-art activation functions, and benchmarks the obtained activation functions on two machine learning examples.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2022)
Article
Polymer Science
Baizhu Lin, Tianhang Lian, Shijie Sun, Mu Zhu, Yuanhua Che, Xueqing Sun, Xibin Wang, Daming Zhang
Summary: We have reported an ultra-broadband and compact TM-pass polarizer based on graphene-buried polymer waveguides. This polarizer demonstrates high extinction ratio, ultra-broadband, low cost, and easy integration with other polymer-based planar lightwave devices.
Article
Engineering, Electrical & Electronic
Mikhail Parfenov, Petr Agruzov, Igor Ilichev, Sergey Bozhko, Aleksandr Shamrai
Summary: The study proposes and analyzes a configuration of integrated optical superconducting single photon detectors based on titanium in-diffused waveguides on lithium niobate substrates. By utilizing hybrid waveguide structures, the detector efficiency is enhanced. Silicon-based structures offer higher light concentration and absorption coefficient, while titanium dioxide structures are potentially easier to produce.
IEEE PHOTONICS JOURNAL
(2021)
