论文信息 - Improved linearity in down-converted analog photonic link by polarization manipulation.

Improved linearity in down-converted analog photonic link by polarization manipulation.

A method to improve the linearity of the down-converted analog photonic link is proposed and experimentally demonstrated, consisting of two phase modulators, a polarizer, and an optical filter. Down-conversion of a 10-GHz microwave signal to 100-MHz intermediate frequency is successfully achieved. By carefully optimizing the angles between the transverse-electric and transverse-magnetic modes, the third-order inter-modulation distortion (IMD3) is suppressed. The linearization method leads to a suppression of the IMD3 by more than 14 and 13 dB improvement of spurious-free dynamic range.

[1] V. R. Pagan,et al. Linearized electrooptic microwave downconversion using phase modulation and optical filtering. , 2011, Optics express.

[2] T. Murphy,et al. A Simple, Linearized, Phase-Modulated Analog Optical Transmission System , 2007, IEEE Photonics Technology Letters.

[3] Tao Zhou,et al. Improvement of linearity in phase-modulated analog photonic link. , 2013, Optics letters.

[4] Effect of third-order intermodulation on radio-over-fiber systems by a dual-electrode Mach-Zehnder modulator with ODSB and OSSB signals , 2006 .

[5] Tao Zhou,et al. SFDR enhancement in analog photonic links by simultaneous compensation for dispersion and nonlinearity. , 2013, Optics express.

[6] T. Murphy,et al. Linearized Downconverting Microwave Photonic Link Using Dual-Wavelength Phase Modulation and Optical Filtering , 2011, IEEE Photonics Journal.

[7] Xiaoping Zheng,et al. Highly Linear Radio-Over-Fiber System Incorporating a Single-Drive Dual-Parallel Mach–Zehnder Modulator , 2010, IEEE Photonics Technology Letters.

[8] T. Clark,et al. Coherent Optical Phase-Modulation Link , 2007, IEEE Photonics Technology Letters.

[9] Gary E. Betts,et al. Linearized modulator for suboctave-bandpass optical analog links , 1994 .

[10] A Agarwal,et al. Predistortion Compensation of Nonlinearities in Channelized RF Photonic Links Using a Dual-Port Optical Modulator , 2011, IEEE Photonics Technology Letters.