Affiliation:
1. College of Information and Navigation, Air Force Engineering University, Xi’an 710077, China
2. Key Laboratory of Electronic Information Control, Southwest China Research Institute of Electronic Equipment, Chengdu 610036, China
Abstract
A photonic approach to the cancellation of self-interference in the optical domain with fiber dispersion immunity and harmonic frequency down-conversion function is proposed based on an integrated, dual-parallel, dual-drive Mach–Zehnder modulator (DP-DMZM). A dual-drive Mach–Zehnder modulator (DMZM) is used as an optical interference canceller, which cancels the self-interference from the impaired signal before fiber transmission to avoid the effect of fiber transmission on the cancellation performance. Another DMZM is used to provide carrier-suppressed, local-oscillation (LO)-modulated, high-order double optical sidebands for harmonic frequency down-conversion to release the strict demand for high-frequency LO sources. By regulating the DC bias of the main modulator, the signal of interest (SOI) can be down-converted to the intermediated frequency (IF) band after photoelectric conversion with improved frequency-conversion efficiency, immunity to the fiber-dispersion-induced power-fading (DIPF) effect, and effective signal recovery. Theoretical analyses and simulation results show that the desired SOI in the X and K bands with a bandwidth of 500 MHz and different modulation formats can be down-converted to the IF frequency. The self-interference noise with the 2 GHz bandwidth is canceled, and successful signal recovery is achieved after a 10 km fiber transmission. The recovery performance of down-converted signals and the self-interference cancellation depth under different interference-to-signal ratios (ISRs) is also investigated. In addition, the compensation performance of DIPF is verified, and a 6 dB improvement in frequency conversion gain is obtained compared with previous work. The proposed scheme is compact, cost-effective, and thus superior in wideband self-interference cancellation, long-range signal transmission, and effective recovery of weak desired signals.
Funder
National Natural Science Foundation of China
National postdoctoral program for innovative talents
Project of science and technology new star of Shaanxi province
Subject
Electrical and Electronic Engineering,Mechanical Engineering,Control and Systems Engineering
Reference23 articles.
1. Ghelfi, P., Scotti, F., Porzi, C., Serafino, G., Falconi, F., Lembo, L., Malacarne, A., and Bogoni, A. (2019, January 22–26). Microwave photonics technologies for 5G and industry 4.0. Proceedings of the 45th European Conference on Optical Communication, Dublin, Ireland.
2. Faster than fiber: Over 100-Gb/s signal delivery in fiber wireless integration system;Yu;Opt. Express,2013
3. A Wideband Highly Integrated and Widely Tunable Transceiver for In-Band Full-Duplex Communication;Yang;IEEE J. Solid-St. Circ.,2015
4. Applications of self-interference cancellation in 5G and beyond;Hong;IEEE Commun. Mag.,2014
5. Keiser, G. (2010). Optical Fiber Communications, McGraw-Hill Education. [4th ed.].
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