Title :
Demonstration of an analog heterodyne interferometric phase-modulated (HIPM) link
Author :
Kalman, R.F. ; Kazovsky, L.G.
Author_Institution :
Dept. of Electr. Eng., Stanford Univ., CA, USA
Abstract :
We present results from a proof-of-concept demonstration of a heterodyne interferometric phase-modulated (HIPM) link we have previously proposed and analyzed. The HIPM link uses a novel frequency shifter/phase modulator and a phase discriminator receiver. The experimental HIPM link demonstrated suppression of third-order intermodulation products (IMPs) by as much as 23 dB as compared to a conventional externally modulated AM link, corresponding to an increase in spurious-free dynamic range of 7.7 dB. We compare experimental performance and theoretical predictions, and consider practical implementations of the link.<>
Keywords :
amplitude modulation; demodulation; intermodulation; light interferometry; optical links; optical modulation; optical receivers; phase modulation; HIPM link; analog heterodyne interferometric phase-modulated link; frequency shifter; phase discriminator receiver; phase modulator; proof-of-concept demonstration; spurious-free dynamic range; third-order intermodulation products; Amplitude modulation; Band pass filters; Optical attenuators; Optical filters; Optical interferometry; Optical modulation; Optical receivers; Optical transmitters; Phase modulation; Radio frequency;
Journal_Title :
Photonics Technology Letters, IEEE
