Improvement of optical beam-forming networks based on broadband optical source and chirped fiber grating

✍ Scribed by Bo Zhou; Xiaoping Zheng; Yabin Ye; Hanyi Zhang; Yili Guo; Bingkun Zhou

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 245 KB
• Volume: 50
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.23802

✦ Synopsis

Abstract

We propose a photonic beam‐forming network scheme based on a broadband optical source (BS), double sideband suppressed carrier (DSB‐SC) modulation, and a chirped fiber grating (CFG). The principle and feasibility are proved by both theoretical analysis and experiments. In 20–32 GHz microwave band, experimental results show a good delay time consistency and the ratio of RF signal to noise met the practical application demands. The time consistency errors are smaller than 3 ps in 20–40GHz band. Specially, compared with traditional double sideband (DSB) modulation scheme, in the proposed approach the dispersion‐induced RF power degradation is effectively mitigated over 24 dB at 30 GHz, and the experimental results agree well with the theoretical ones. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2992–2994, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23802