18 November 2008 Integrated photonic beamformer employing continuously tunable ring resonator-based delays in CMOS-compatible LPCVD waveguide technology
Author Affiliations +
Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71351K (2008) https://doi.org/10.1117/12.803719
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China
Abstract
In this paper a novel CW laser-compatible, squint-free, continuously tunable ring resonator-based optical beamformer mechanism for a phased array receiver system is proposed and partly demonstrated. When the optical delay elements and optical signal processing circuitry are integrated on a chip, a single-chip optical beam forming network (OBFN) is obtained. The optical delay elements are ideally continuously tunable to achieve continuous control of the beam direction, and should have a flat delay and magnitude response over the signal band, to avoid distortion. In the proposed system architecture, filter-based optical single-sideband suppressed-carrier modulation and balanced coherent optical detection are used. Such architecture has significant advantages over a straightforward architecture using optical intensity modulation and direct optical detection, namely reduced complexity of the OBFN chip, and enhanced dynamic range. Measurements on an actual 1×8 OBFN chip and an optical sideband filter chip are presented. Both are realized in CMOS-compatible planar optical waveguide technology (TriPleX).
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. G. H. Roeloffzen, A. Meijerink, L. Zhuang, D. A. I. Marpaung, R. G. Heideman, A. Leinse, M. Hoekman, W. van Etten, "Integrated photonic beamformer employing continuously tunable ring resonator-based delays in CMOS-compatible LPCVD waveguide technology", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71351K (18 November 2008); doi: 10.1117/12.803719; https://doi.org/10.1117/12.803719
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT

Optically Interconnected Phased Arrays
Proceedings of SPIE (September 08 1988)
Direct optical phase shifter for phased-array systems
Proceedings of SPIE (August 01 1991)
Optically Controlled mmW Phased Arrays
Proceedings of SPIE (November 09 1987)
Fiber Optic Beamforming For Smart Skin Arrays
Proceedings of SPIE (February 05 1990)

Back to Top