Experimental Demonstration of Linear Phase Detection

Author

Betts, G.E. ; Krzewick, W. ; Wu, S. ; Yu, P.K.L.

Author_Institution

Photonic Syst. Inc., Billerica

Volume

19

Issue

13

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

993

Lastpage

995

Abstract

The phase of an optical signal can be linearly converted to voltage by using a receiver incorporating an electrooptic feedback loop. We demonstrate such a receiver in an externally modulated analog link, showing 12-dB improvement in input third-order intercept point with no second-order distortion. Feedback loop gain is achieved without electronic amplification, using only electrooptic and passive components.

Keywords

electro-optical effects; electro-optical modulation; microwave photonics; optical feedback; optical links; optical receivers; optical signal detection; phase modulation; RF photonics; coherent optical detection; electrooptic component; electrooptic feedback loop; externally modulated analog link; feedback loop gain; linear phase detection; optical phase-locked loop; optical signal phase detection; passive component; phase modulation; receiver; third-order intercept point; Feedback loop; Nonlinear optics; Optical distortion; Optical feedback; Optical interferometry; Optical modulation; Optical receivers; Phase detection; Phase modulation; Voltage; Analog link; RF photonics; coherent optical detection; dynamic range; linearization; optical phase-locked loop; phase modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.898741

Filename

4232424