A two-dimensional(2D)optical true-time delay(TTD)beam-forming system using a compact fiber grating prism(FGP)for a planar phased array antenna(PAA)is proposed.The optical beam-forming system mainly consists of a TTD u...A two-dimensional(2D)optical true-time delay(TTD)beam-forming system using a compact fiber grating prism(FGP)for a planar phased array antenna(PAA)is proposed.The optical beam-forming system mainly consists of a TTD unit based on the same compact FGP,one tunable laser for elevation beam steering,and a controlled wavelength converter for azimuth beam steering.A planar PAA using such2D optical TTD unit has advantages such as compactness,low bandwidth requirement for tunable laser sources,and potential for large-scale system implementations.The proof-of-concept experiment results demonstrate the feasibility of the proposed scheme.展开更多
In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the s...In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the spectral properties of uniform Bragg grating is analyzed by using coupling mode theory which is optical properties of high sensitivity fiber Bragg grating on temperature sensor in accordance with experiment.展开更多
A WDM compatible Edge-to-Edge Self-Routed optical packet switched network that simplifies the optical processing is proposed. The system employs all-optical packet label generation and recognition using coded superstr...A WDM compatible Edge-to-Edge Self-Routed optical packet switched network that simplifies the optical processing is proposed. The system employs all-optical packet label generation and recognition using coded superstructured Fiber Bragg gratings.展开更多
基金supported by the National "973" Project of China(Nos.2010CB328202,2010CB328204,and 2012CB315604)the National Natural Science Foundation of China(Nos.61271191 and 61001124)+3 种基金the National "863" Project of China(No.2012AA011302)the Program for New Century Excellent Talents in University(No.NCET-12-0793)the Beijing Nova Program(No.2011065)the Fundamental Research Funds for the Central Universities
文摘A two-dimensional(2D)optical true-time delay(TTD)beam-forming system using a compact fiber grating prism(FGP)for a planar phased array antenna(PAA)is proposed.The optical beam-forming system mainly consists of a TTD unit based on the same compact FGP,one tunable laser for elevation beam steering,and a controlled wavelength converter for azimuth beam steering.A planar PAA using such2D optical TTD unit has advantages such as compactness,low bandwidth requirement for tunable laser sources,and potential for large-scale system implementations.The proof-of-concept experiment results demonstrate the feasibility of the proposed scheme.
基金Supported by Beijing Educational Committee Foundation (Km200310005022) and (00KG040)
文摘In this paper, the spectrum shift properties of the center reflection wavelength detected to be based on the FBG sensor with ambient temperature change. The basic theoretical methods and numerical simulation for the spectral properties of uniform Bragg grating is analyzed by using coupling mode theory which is optical properties of high sensitivity fiber Bragg grating on temperature sensor in accordance with experiment.
文摘A WDM compatible Edge-to-Edge Self-Routed optical packet switched network that simplifies the optical processing is proposed. The system employs all-optical packet label generation and recognition using coded superstructured Fiber Bragg gratings.
