A Reconfigurable Photonic Microwave Mixer Using a 90° Optical Hybrid
| Autor: | Shilong Pan, Zhenzhou Tang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Radiation Electronic mixer Sideband business.industry Local oscillator 02 engineering and technology Photodetection Condensed Matter Physics 01 natural sciences 010309 optics 020210 optoelectronics & photonics Intermediate frequency Optical Carrier transmission rates 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Optoelectronics Electrical and Electronic Engineering Atomic physics Photonics business Frequency mixer |
| Zdroj: | IEEE Transactions on Microwave Theory and Techniques. 64:3017-3025 |
| ISSN: | 1557-9670 0018-9480 |
| Popis: | A reconfigurable photonic microwave mixer is proposed using a 90° optical hybrid. To perform the reconfigurable mixing, an optical carrier is split into two branches. One portion is intensity-modulated by an RF or intermediate frequency signal, and the other is driven by a local oscillator (LO). Each generates an optical sideband. The two sidebands from the two branches are introduced to the signal port and the LO port of an optical hybrid which typically has four output ports, namely, $I_{1}$ , $I_{2}$ , $Q_{1}$ , and $Q_{2}$ . When any one of the outputs is detected by a photodetector (PD), a single-ended mixer is obtained. If one of the combinations ( $I_{1}$ , $I_{2})$ and ( $Q_{1}$ , $Q_{2})$ is sent to a balanced PD, a balanced mixer is realized. When $I_{1}$ (or $I_{2})$ and $Q_{1}$ (or $Q_{2})$ are detected by two PDs, an I/Q mixer with quadrature outputs is achieved. When an electrical 90° hybrid is used to combine the two outputs of the I/Q mixer, image-reject mixing is implemented. A theoretical model is established to analyze the proposed mixer, and an experiment is also carried out. The results demonstrate that the proposed mixer can achieve reconfigurable mixing functions by simply changing the photodetection method. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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