1. Time–frequency-varying multicarrier generation using dynamic recirculating frequency shifter
- Author
-
Zhipei Li, Bo Liu, Qi Zhang, Xiangjun Xin, Yaya Mao, and Xishuo Wang
- Subjects
Optical amplifier ,Signal generator ,Materials science ,Optical engineering ,Bandwidth (signal processing) ,General Engineering ,02 engineering and technology ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Time–frequency analysis ,010309 optics ,Wavelength ,020210 optoelectronics & photonics ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Frequency shifter ,Single-sideband modulation - Abstract
A time–frequency-varying multicarrier generation scheme based on dynamic single-sideband recirculating frequency shifter is proposed and experimentally demonstrated. Through the use of two time-domain sinusoidal signals with stationary phase shift provided by a phase control module, multicarriers with flexible frequency intervals are obtained without carrier-to-noise ratio and flatness loss. We have experimentally attained multicarriers with 10-/12.5-/15-GHz carrier intervals in 3-nm bandwidth, and carriers with arbitrary intervals can be achieved when using the proposed scheme combined with a flexible wavelength selective switch.
- Published
- 2019