Photonic microwave bandpass filter based on optical single-sideband polarization modulation for long-reach radio over fiber applications

A two-tap dispersion-insensitive photonic microwave bandpass filter based on optical single-sideband (SSB) polarization modulation is proposed for long-reach radio over fiber applications. The optical SSB polarization modulation, which generates two complementary intensity-modulated signals along two orthogonal polarization directions, is implemented by a polarization modulator (PolM) followed by an optical filter. With a polarization maintaining fiber (PMF) to introduce a time delay, a two-tap dispersion-insensitive photonic microwave bandpass filter is obtained. The proposed filter is used to shape a Gaussian pulse to an ultra-wideband (UWB) signal. After 40-km fiber transmission, no distortion in the waveform of the UWB signal is observed.

[1]  Fei Zeng,et al.  Photonic Generation of Ultrawideband Signals , 2007, Journal of Lightwave Technology.

[2]  Idelfonso Tafur Monroy,et al.  Distribution of photonically generated 5 Gbits/s impulse radio ultrawideband signals over fiber. , 2011, Optics letters.

[3]  Liang Xie,et al.  Fiber Dispersion and Nonlinearity Influences on Transmissions of AM and FM Data Modulation Signals in Radio-Over-Fiber System , 2010, IEEE Journal of Quantum Electronics.

[4]  Robert A. Minasian,et al.  Photonic signal processing of microwave signals , 2006 .

[5]  Shilong Pan,et al.  IR-UWB-Over-Fiber Systems Compatible With WDM-PON Networks , 2011, Journal of Lightwave Technology.

[6]  H. Schmuck.  Comparison of optical millimetre-wave system concepts with regard to chromatic dispersion , 1995 .

[7]  B. Ortega,et al.  A tutorial on microwave photonic filters , 2006, Journal of Lightwave Technology.

[8]  Hiroshi Kato,et al.  40-GHz electro-optic polarization modulator for fiber optic communications systems , 2004, Photonics North.

[9]  Qing Wang,et al.  Photonic Microwave Bandpass Filter With Negative Coefficients Using a Polarization Modulator , 2007, IEEE Photonics Technology Letters.

[10]  K. Williams,et al.  Microwave photonics , 2002 .

[11]  Xiaoke Yi,et al.  Tunable and Reconfigurable Photonic Signal Processor With Programmable All-Optical Complex Coefficients , 2010, IEEE Transactions on Microwave Theory and Techniques.

[12]  Beatriz Ortega,et al.  Optical UWB pulse generator using an N tap microwave photonic filter and phase inversion adaptable to different pulse modulation formats. , 2009, Optics express.

[13]  K. Wilner,et al.  Fiber-optic delay lines for microwave signal processing , 1976, Proceedings of the IEEE.