Abstract
The ability to transmit millimeter-wave signals over fiber opens up new possibilities for distributed antenna networks and phased- array systems. Previous results have demonstrated the transmission of millimeter-wave signals at 40 Mbit/s around 35 GHz by using narrow-band resonant enhancement.1 In this paper we report a system demonstration of 300-Mbit/s binary-phase- shift-keyed (BPSK) signal transmission at a carrier frequency of 39 GHz through 2.2 km of optical fiber, using a recently reported feedforward modulation technique.2 A bit error rate (BER) of 10-9 at a received optical power of —9.8 dBm has been achieved. The experimental setup is shown in Fig. 1. The dotted enclosure represents the feedforward millimeter-wave optical modulator. Details of the operational principle of this modulation technique can be found in Ref. 2. In brief, a beat note at 36.5 GHz is generated by photomixing two 1.3-μιη distributed-feedback (DFB) lasers each with a free-running linewidth of 15 MHz and emitting at an optical power of 8 mW. The beat note is electrically-mixed with the input millimeter-wave signal that is centered at 39 GHz and contains pseudorandom (215 — 1) nonreturn-to-zero (NRZ) BPSK data at 150-300 Mbit/s. The resulting i.f. error signal at fD = 39.0 — 36.5 = 2.5 GHz is fed forward to an external optical modulator with a 4-GHz electrical bandwidth.
© 1994 Optical Society of America
PDF ArticleMore Like This
John B. Georges, David M. Cutrer, Meng-Hsiung Kiang, and Kam Y. Lau
ThF4 Optical Fiber Communication Conference (OFC) 1995
Olav Solgaard, John Park, John B. Georges, Petar K. Pepeljugoski, and Kam Y Lau
IWA6 Integrated Photonics Research (IPR) 1993
J. B. Georges, M. H. Kiang, K. Heppell, and K. Y. Lau
CThB2 Conference on Lasers and Electro-Optics (CLEO:S&I) 1994