RF MULTIPLIER BASED ON HARMONIC-LOCKED SMFP-LD AND OEO STRUCTURE
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Date
2022
Authors
Chen, Hao
Ukaegbu, Ikechi Augustine
Nakarmi, Bikash
Pan, Shilong
Journal Title
Journal ISSN
Volume Title
Publisher
Chen, H., Ukaegbu, I. A., Nakarmi, B., & Pan, S. (2021). RF Multiplier Based on Harmonic-Locked SMFP-LD and OEO Structure. IEEE Access, 1. https://doi.org/10.1109/access.2021.3138433
Abstract
We propose and experimentally demonstrate an RF signal multiplier based on optical injection
locking in a semiconductor laser followed by an optoelectronic oscillator (OEO). In the proposed scheme,
the modulated master laser is injected into a slave laser, a single mode Fabry-Pérot laser diode (SMFP-LD),
in such a way that one of the harmonics of the modulated beam is locked to the corresponding mode of the
SMFP-LD. By optical beating at the output of the SMFP-LD, stable multiple RF signals with ahigh signal-tonoise ratio (SNR) are generated due to SMFP-LD, which provides a sufficient gain to the RF signal. Further,
we employ an OEO structure at the output of the SMFP-LD to optimize one of the generated multiple RF
signals which are determined by the electrical bandpass filter (EBPF) and the low noise amplifier (LNF) in
the OEO loop. As the gain of the OEO loop is higher than the loss, a high-purity oscillating signal, which is
the selected multiple RF frequency, can be generated. In the experiment, a sextuple frequency (20 GHz) of the
modulated signal is observed with an SNR and the phase noise of 54.44 dB and −102.44 dBc/Hz@10 kHz,
respectively. Compared with other photonic schemes, the proposed method provides high SNR, higher
multiplication factor, and low phase noise
Description
Keywords
Type of access: Open Access, Optical injection, linear frequency modulation, SMFP-LD, red-shift
Citation
IEEE Access