Optoelectronic microwave signal generation

Christophere Morlaas; Jean-Claude Mollier; Jacques Isbert

doi:10.1117/12.373597

29 December 1999 Optoelectronic microwave signal generation

Christophere Morlaas, Jean-Claude Mollier, Jacques Isbert

Proceedings Volume 4016, Photonics, Devices, and Systems; (1999) https://doi.org/10.1117/12.373597
Event: Photonics Prague '99, 1999, Prague, Czech Republic

Abstract

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.

Citation Download Citation

Christophere Morlaas, Jean-Claude Mollier, and Jacques Isbert "Optoelectronic microwave signal generation", Proc. SPIE 4016, Photonics, Devices, and Systems, (29 December 1999); https://doi.org/10.1117/12.373597

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KEYWORDS

Oscillators

Microwave radiation

Semiconductor lasers

Modulators

Photodetectors

Signal generators

Heterodyning

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