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Application of Semiconductor Optical Amplifiers in Scalable Switched Radio-over-Fiber Networks

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5 Author(s)
Xin Qian ; Department of Engineering, University of Cambridge, Cambridge CB2 1PZ, UK, Phone: +44 (0) 1223 339880, Fax: +44 (0) 1223 767032, Email: ; Hartmann, P. ; Sheng Li ; Penty, R.V.
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This paper reports the use of semiconductor optical amplifier (SOA) based routing switches in radio-over-fiber (RoF) systems. It is shown that only little additional penalty is introduced by the switches. A proof-of-principle 10 × 10 switching unit is employed in a time-domain switched RoF network, where an SFDR of 96.5dB·Hz2/3is achieved and a 10MSymbol/s QPSK modulated signal at a carrier frequency of 2.5GHz is switched with an EVM of 1.48%. Switching times as low as 50μs are achieved, limited by the driving circuitry of the SOAs. Furthermore, it is demonstrated that the switch is scalable and can be cascaded.

Published in:

Microwave Photonics, 2005. MWP 2005. International Topical Meeting on

Date of Conference:

12-14 Oct. 2005