Paper
27 December 2001 Multitone photonic oscillator
Keyvan Sayyah, Daniel Yap
Author Affiliations +
Abstract
A photonic oscillator that can generate multi-tone oscillations in both the RF and optical domains is demonstrated. The oscillator consists of a simple closed optoelectronic loop comprising a CW laser source, an optical modulator, a photodetector, a low noise electrical amplifier, an electrical bandpass filter and single or multiple optical delay elements. Multi-tone oscillations with independent control of tone spacing and phase noise is demonstrated using two optical fiber delay lines as optical delay elements. The phase noise of the oscillator is systematically measured as a function of its parameters such as the photodetector current, the amplifier gain and oscillation frequency. Phase noise values better than -125 dBc/Hz at 100 kHz offset frequency are measured at various combinations of the above parameters. Multi-tone photonic oscillators using Mach-Zender or electroabsorption modulators are theoretically analyzed and experimentally demonstrated with the relative merits compared.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Keyvan Sayyah and Daniel Yap "Multitone photonic oscillator", Proc. SPIE 4490, Multifrequency Electronic/Photonic Devices and Systems for Dual-Use Applications, (27 December 2001); https://doi.org/10.1117/12.455442
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KEYWORDS
Oscillators

Modulators

Optical amplifiers

Photodetectors

Phase measurement

Optoelectronics

Fiber amplifiers

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