Silicon-Based Optical Phased Array Using Electro-Optic [Formula Omitted]-[Formula Omitted]-[Formula Omitted] Phase Shifters

We present a [Formula Omitted] silicon optical phased array using electro-optic phase shifters to attain high-speed operation with low power consumption. The phase shifters are constructed using a [Formula Omitted]-[Formula Omitted]-[Formula Omitted] junction structure with the [Formula Omitted]- an...

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Veröffentlicht in:IEEE photonics technology letters 2019-11, Vol.31 (21), p.1685
Hauptverfasser: Kang, Geumbong, Chan-Hyun, Youn, Yu, Kyoungsik, Park, Hyo-Hoon, Seong-Hwan, Kim, Jong-Bum You, Dae-Seong, Lee, Yoon, Hyeonho, Yun-Gi Ha, Jong-Hun, Kim, Dong-Eun Yoo, Lee, Dong-Wook
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Sprache:eng
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Zusammenfassung:We present a [Formula Omitted] silicon optical phased array using electro-optic phase shifters to attain high-speed operation with low power consumption. The phase shifters are constructed using a [Formula Omitted]-[Formula Omitted]-[Formula Omitted] junction structure with the [Formula Omitted]- and [Formula Omitted]-doped regions formed on both sides of the [Formula Omitted]-region. The [Formula Omitted]-region width of the phase shifter is optimized considering the power consumption for phase-tuning and the propagation loss in the phase shifter. The fabricated [Formula Omitted]-[Formula Omitted]-[Formula Omitted] phase shifter exhibits a fast operating speed of 20 MHz and a low phase-tuning power of 1.7 mW/[Formula Omitted]. From a 1-D optical phased array integrated with 2-[Formula Omitted]-pitch grating radiators, a wide beam-steering range of 45° is attained along the transversal direction at a [Formula Omitted] wavelength. Average power consumption for the beam-forming operation of the [Formula Omitted] OPA is measured to be 39.6 mW and the average transition time to steer the beam is 24 ns.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2019.2939550