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Integrated implementation of ultra stable VCO using optical Self-ILPLL techniques
Conference proceeding

Integrated implementation of ultra stable VCO using optical Self-ILPLL techniques

Tianchi Sun, Li Zhang, Kevin Receveur, Ajay K Poddar, Ulrich L Rohde, Afshin Daryoush and IEEE
2016 IEEE MTT-S International Microwave Symposium (IMS), v 2016-, pp 1-4
May 2016

Abstract

19″ Rack mount system DRO Dual phase locked loop Fiber optic noise figure multiplied RIN Optical amplifiers Optical fiber amplifiers Optical noise Phase noise Residual phase noise Self IL Self PLL Si-Ge HBT amplifiers VCO Voltage-controlled oscillators
A cost effective realization of optically Self-ILPLL of a state of the art phase locked DRO system at 10GHz in a 19" rack mountable box is realized with phase noise of -132dBc/Hz at 10 kHz offset carrier. Long optical delay lines of 3km and 5km are respectively used for achieving self-dual phase locking (SPLL) and self-injection locking (SIL) at 10GHz. Phase noise of this DRO is reduced from -83.0dBc/Hz to -104.5dBc/Hz at 1kHz offset using a SIL (1km) and dual-SPLL (3km and 5km) as an optical DSILPLL. The fiber optic delay line performances and their attributed residual phase noise are compared in terms of attained noise figure. The low-cost integrated DFB with Electro-Absorption Modulator (EAM-LD) resulted in 45dB noise figure, whereas single electrode and push-pull amplified dual electrodes Mach-Zehnder Modulator (MZM) resulted in noise figures of 44dB and 32dB, respectively using large linewidth DFB lasers.

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Industry collaboration
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Web of Science research areas
Engineering, Electrical & Electronic
Physics, Applied
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