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Millimeter-wave multi-carrier generation for WDM-ROF system without ultra-high-speed modulator

LI WENJING1,* , SANG XINZHU1, YUAN JINHUI1, WANG KUIRU1, YU CHONGXIU1, XIN XIANGJUN2

Affiliation

  1. Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Institute of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunicat
  2. School of Electronic Engineering, Beijing University of Posts a n d Telecommunications, P.O. Box163 (BUPT), Beijing 100876, China

Abstract

We propose a novel method of multi-carriers generation for wavelength-division-multiplexed millimeter-wave-band radio-on-fiber system, and define carrier-to-carrier rate (CCR) to evaluate the scheme performance. Firstly, we experimentally generated a super-continuum source (SCS) with 20-dB width of more than 260 nm around 1550 nm by coupling a femto-second pulses lauched by the semiconductor mode-locked laser into two passages of 5-m-long high nonlinear photonic crystal fibers (PCFs) with opposite dispersion value. Secondly, we used a sampled fiber Bragg grating (SFBG) to filter spectrum, and the results showed that spectrum was sliced into 20 channels with -0.3-0.3 dB Peak fluctuation. Moreover, each two adjacent channels can be filtered out as one of radio-frequency carriers, and the amplitude differences of two sub-carriers in wavelength-division-multiplexed millimeter-wave-band radio-on-fiber system are tiny to ensure optimal CCR.

Keywords

Radio-on-fiber technology, Optical carrier suppression, Sampled fiber Bragg grating(SFBG), Millimeter(mm)-wave.

Citation

LI WENJING, SANG XINZHU, YUAN JINHUI, WANG KUIRU, YU CHONGXIU, XIN XIANGJUN, Millimeter-wave multi-carrier generation for WDM-ROF system without ultra-high-speed modulator, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1901-1905 (2010).

Submitted at: April 15, 2010

Accepted at: Nov. 10, 2010