All-fiber incoherent frequency-to-time mapping method for microwave signal generation with baseband transmission and multicasting support
- 作者：Ví ; ctor Torres-Company ; Idelfonso Tafur Monroy ; Jesú ; s Lancis ; Pedro André ; s
- 关键词：Radio frequency photonics ; Fourier optics and signal processing
- 刊名：Optics Communications
- 出版年：2008
- 期刊代码：50_00304018
- 类别：ph
- 出版时间：August 2008
- 卷：281
- 期：15-16
- 页码：3965-3968
- 文件大小：650 K
摘要
We present a proof-of-principle experiment for achieving simultaneous distribution of baseband radio-frequency data and up-conversion with broadcasting support over a passive optical network. The technique is based on an incoherent frequency-to-time mapping method for pulse shaping. Specifically, we synthesize the spectral density function of sliced ASE noise from an EDFA with a periodic Mach–Zehnder fiber interferometer optical filter. By using external intensity modulation combined with propagation in an optical fiber, after photodetection, the resultant averaged temporal pulse profile resembles the shape of the incoherent source. The photodetected signal contains both the baseband data and an up-frequency converted copy with central wavelength for the microwave carrier into the ultra-wideband range and tuning capability by selection of the fiber length.