TITLE:
In-Line Chromatic Dispersion Measurement for NRZ and RZ Signals Using a Novel RF Spectrum Phase Detection Technique
AUTHORS:
Guozhou Jiang, Ying Mei
KEYWORDS:
Radio Frequency Photonics; Frequency Modulation; Fiber Measurements; Fiber Optics Links; Subsystems; Modulation; Ultrafast Processes in Fibers
JOURNAL NAME:
Optics and Photonics Journal,
Vol.3 No.4,
August
8,
2013
ABSTRACT: In this paper, a novel method of in-line chromatic
dispersion (CD) measurement is proposed, we theoretically and experimentally
demonstrated the CD measurement of 10-Gbit/s NRZ and RZ signals by a novel RF
spectrum phase detection technique, this is performed using in-band tone
monitoring RF, electrically down-converted to direct current (DC) or a low
intermediate-frequency (IF) of less than 1MHz through electronic mixing with local
oscillator (LO) of 2.4 GHz. The measurement provides a large CD measuring
range with good accuracies (±2000 ± 35 ps/nm), and independent of the bit-rate and
data format. In addition, the use of electronic mixer and low-speed detectors
makes it cost effective for in-line CD measurement.