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29 December 1999 Optoelectronic microwave signal generation
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Proceedings Volume 4016, Photonics, Devices, and Systems; (1999)
Event: Photonics Prague '99, 1999, Prague, Czech Republic
The merging of microwave and lightwave technologies has opened new opportunities in system design, especially in frequency standard generation and optical communication. Optical generation of microwave and millimeter-waves is usually carried out by coherent heterodyne together with some locking techniques to achieve a low phase noise. We present experimental results for an oscillator that converts continuous light energy from a semiconductor diode laser into radio frequency and microwave signals. Light from the laser diode is introduced into an electro-optic intensity modulator (EOM), the output of which is launched through an optical fiber delay line and then detected. The output of the photodetector is oscillation frequency limited by the sped of the optoelectronic components, a noise limit determined by the pump laser's RIN, frequency tuning capabilities, potential for optoelectronic integration. The present performance of our oscillator are: a power level higher than 20mW at 900 MHz, a free running spectral width below 1Hz and a spectral purity close to that of marked RF synthesizers.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christophere Morlaas, Jean-Claude Mollier, and Jacques Isbert "Optoelectronic microwave signal generation", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999);

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