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光开关及其在全光网中的应用 被引量:8
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作者 隋志成 姜希军 吴志坚 《光通信技术》 CSCD 北大核心 2002年第3期27-32,共6页
光开关是完成全光交换的核心器件 ,光开关的研究日益成为全光通信领域关注的焦点。从光开关的性能指标开始系统介绍了光开关的类型 ,深入探讨了光开关构成的全光交换机的结构原理。随着数据网络的迅速发展 。
关键词 交换 网络 交换机 光子开光
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Tunable thermo-optic switch based on fluid-filled photo-nic crystal fibers 被引量:1
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作者 王然 姚建铨 +3 位作者 陆颖 苗银萍 赵晓蕾 王若琪 《Optoelectronics Letters》 EI 2012年第6期430-432,共3页
A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (P... A tunable thermo-optic intensity-modulated switch is investigated theoretically and numerically. It is based on the infiltration of temperature-sensitive mixture liquids into index-guiding photonic crystal fibers (PCFs). The switching function attributes to the thermo-optic effect of the effective refractive index of the cladding. The simulation illustrates that the switch presents a tunable transition point according to the concentration of the mixture liquids, and the on-off switching functionality can be realized within a narrow temperature range of 2 ℃. The switches have wide application for innovative all-in-fiber optical communication and logic devices. 展开更多
关键词 Logic devices Optical communication Refractive index Switching functions
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Recent advancements in 2D nanomaterials for cancer therapy 被引量:1
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作者 Menghuan Li Zhong Luo Yanli Zhao 《Science China Chemistry》 SCIE EI CAS CSCD 2018年第10期1214-1226,共13页
Since mechanical exfoliation of graphene in 2004, unprecedented scientific and technological advances have been achieved in the development of two-dimensional(2 D) nanomaterials. These 2 D nanomaterials exhibit variou... Since mechanical exfoliation of graphene in 2004, unprecedented scientific and technological advances have been achieved in the development of two-dimensional(2 D) nanomaterials. These 2 D nanomaterials exhibit various unique mechanical, physical and chemical properties on account of their ultrathin thickness, which are highly desirable for many applications such as catalysis, optoelectronics, energy storage/conversion, as well as disease diagnosis and therapeutics. In this review, we summarized recent progress on the design and fabrication of functional 2 D nanomaterials capable of being applied for the cancer treatment including drug delivery, photodynamic therapy, and photothermal therapy. Their anticancer mechanisms were discussed in detail, and the related safety concerns were analyzed based on current research developments. This review is expected to provide an insight in the field of 2 D nanostructured materials for anticancer applications. 展开更多
关键词 2D nanomaterials cancer therapy drug delivery photodynamic therapy photothermal therapy
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All-Optical Switching between Optical Bistability and Multistability via Exciton Spin Relaxation
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作者 Asadpour Seyyed Hossein Rahimpour Soleimani Hamid 《Communications in Theoretical Physics》 SCIE CAS CSCD 2015年第1期71-76,共6页
All-optical coherent control of optical bistability (013) and optical multistability (OM) in the 4.8 nm ZnSe single-quantum well based on excitons and biexciton transitions is investigated. By applying a pair of p... All-optical coherent control of optical bistability (013) and optical multistability (OM) in the 4.8 nm ZnSe single-quantum well based on excitons and biexciton transitions is investigated. By applying a pair of phase-locked laser pulses all-optical coherent control can be obtained. Theoretical analysis with density matrix and Maxwell equations then yield the optical bistability ~nd optical multistability. It is shown that by controlling the coherent and incoherent processes, the intensity threshold of OB and OM can be modified. Also, it is found that the switching between OB and OM or vice versa can be occurred for some controllable parameters. 展开更多
关键词 optical bistability exciton spin relaxation quantum well nanostructure
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