Gary E. Betts

TL;DR: In this article, the authors present a review of the development of devices enabling link performance closer to these limits, including (but not limited to): cascade lasers that permit broadband direct modulation links with gain > 0 dB, injection-locked edge-and surface-emitting lasers at 1300 and 1550 nm with modulation frequency responses as great as 40 GHz, and high-speed photodetectors with high saturation currents, e.g., a 20 GHz device with a saturation current of 90 mA and a 55-GHz device with saturation at 50 mA.

TL;DR: In this article, the authors present a phase-encoded optical sampling technique for analog-to-digital (ADC) converters with high-extinction LiNbO/sub 3/1/to-8 optical time-division demultiplexers.

TL;DR: The component developments necessary for higher performance RF-over-fiber links are summarized, i.e., semiconductor lasers that have higher slope efficiency and bandwidth and lower relative intensity noise (RIN) at reasonable bias current levels; continuous wave lasers (for external modulation) with higher fiber-coupled power and lower RIN; higher frequency lower loss external modulators with more linear transfer functions and lower V/sub /spl pi// that can withstand larger CW optical powers.

TL;DR: In this paper, an analytic lumped-element small-signal models of directly and externally modulated analog fiber-optic links are derived and compared with the performances of these modulation techniques.

TL;DR: In this article, state-of-the-art intensity-modulation direct-detection (IMDD) analog optical links are compared with external modulation with respect to gain, noise figure, and dynamic-range performance.