학술논문
Phase-Insensitive RF Envelope Detection Allows Optical Heterodyning of MHz-Linewidth Signals
Document Type
Periodical
Author
Source
IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 25(22):2193-2196 Nov, 2013
Subject
Language
ISSN
1041-1135
1941-0174
1941-0174
Abstract
We demonstrate the insensitivity of the envelope detection based mobile terminal to phase fluctuations of the RF signal. This property enables the generation of radio over fiber (RoF) signals heterodyning non-narrow linewidth laser signals and using direct modulation. We report the experimental generation of up to 2-Gb/s orthogonal frequency division multiplexing (OFDM) signals and their transmission over a 25-km long fiber span using direct modulation and DFB lasers with a combined linewidth of 2.1 MHz with a resulting BER below $10^{-3}$.