Gain, Noise Figure and Bandwidth-Limited Dynamic Range of a Low-Biased External Modulation Link

We present a broad-bandwidth (1 -12 GHz) low-biased external modulation fiber-optic link without preamplifiers that has a gain of 6 dB-14 dB and a noise figure of < 7.S dB everywhere in this broad bandwidth, with a record low noise figure of only 3.4 dB at 2 GHz. The third-order distortion-limite...

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Bibliographic Details
Main Authors: Roussell, H.V., Regan, M.D., Prince, J.L., Cox, C.H., Chen, J.X., Burns, W.K., Betts, G.E., Ackerman, E.I., Campbell, J.C.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Dynamic range
Electrodes
Electrooptic modulators
Frequency
Noise figure
Noise measurement
Optical fibers
Optical modulation
Performance gain
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Summary:We present a broad-bandwidth (1 -12 GHz) low-biased external modulation fiber-optic link without preamplifiers that has a gain of 6 dB-14 dB and a noise figure of < 7.S dB everywhere in this broad bandwidth, with a record low noise figure of only 3.4 dB at 2 GHz. The third-order distortion-limited spurious-free dynamic range (SFDK) of this link within any suboctavc portion of the 1-12 GHz range of operating frequencies is approximately 120 dBHz 2/3 in a 1-Hz instantaneous receiver bandwidth. We describe the high-performance components in this link and discuss the extent to which their performance varies with frequency, and show which of these components' frequency-dependent parameters affect which of the three figures of merit (gain, noise figure, and SFDR).
DOI:10.1109/MWP.2007.4378142