Packaging and system demonstration of an X-band phased array antenna utilizing highly dispersive photonic crystal fiber based true-time-delay

Harish Subbaraman; Maggie Yihong Chen; Ray T. Chen

doi:10.1117/12.811027

17 February 2009 Packaging and system demonstration of an X-band phased array antenna utilizing highly dispersive photonic crystal fiber based true-time-delay

Harish Subbaraman, Maggie Yihong Chen, Ray T. Chen

Author Affiliations +

Proceedings Volume 7221, Photonics Packaging, Integration, and Interconnects IX; 722107 (2009) https://doi.org/10.1117/12.811027
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

We demonstrate single RF beam transmission and reception of an X-band phased array antenna using highly dispersive photonic crystal fiber (PCF) based true-time-delay (TTD) lines. The dispersion coefficient of the fabricated fiber is as high as -600ps/nm/km at a wavelength of 1545nm. Coupling between a dispersion shifted fiber (DSF) and the fabricated PCF is performed by using an ultra high numerical aperture (UHNA) intermediate fiber, which helps in achieving a good coupling efficiency and keeping the insertion loss of the delay lines to under 3.5dB. Using the PCF-TTD network, we report the transmission of 8.4GHz signal at 7.4⁰ and 12GHz signal at 21.2⁰ by tuning the laser wavelength to 1547.72nm and 1552.52nm respectively. Single beam receiving capability is also demonstrated by accurately detecting 8.4GHz signal coming from -7.4⁰ and 12GHz signal coming from -21.2⁰ by tuning the wavelengths to 1547.72nm and 1552.52nm respectively..

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Harish Subbaraman, Maggie Yihong Chen, and Ray T. Chen "Packaging and system demonstration of an X-band phased array antenna utilizing highly dispersive photonic crystal fiber based true-time-delay", Proc. SPIE 7221, Photonics Packaging, Integration, and Interconnects IX, 722107 (17 February 2009); https://doi.org/10.1117/12.811027

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KEYWORDS

Antennas

Dispersion

Photonic crystal fibers

X band

Phase measurement

Signal detection

Phased array optics

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