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Studies on radio on fiber assess system eliminating external electric power supply at base station

基站免外供电光纤接入无线评估系统的研究

基本信息

批准号：
13355017
负责人：
MIKI Tetsuya
金额：
$ 25.21万
依托单位：
The University of Electro-Communications
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13355017/
关键词：
optical access system opto-electric conversion radio on fiber electric powerless system optical power supply Raman amplification

项目摘要

The purpose of this research program is to propose and study the feasibility of a new radio on fiber access system for high-speed wireless communication without any external electric power supply facilities.The following results were obtained.*With the proposed optical power feeding technique, the electrical power of 15mW and the electric voltage of 2V were obtained.Hence, it is found that all of the electronic/optical components, including a low-noise amplifier and an optical modulator could be successfully driven.*An electroabsorption modulator was employed as the optical modulator at the base station. 10dB sensitivity improvement was achieved with the electrical bias supplied by the fed optical power.*The low-noise amplifier was designed under the condition of small power supply up to 10mW. The maximum gain of 14dB for single-stage, or 22dB for dual-stage was obtained.*With the stimulated Raman effect by the optical power feeding, the optical signal gain more than 2dB was obtained for a 10Km-long optical transmission line. Hence the optical power feeding was found to be effective for optical signal power compensation.Finally, the system experiment was done with the integration of above techniques, which resulted in 22dB sensitivity improvement compared with the existing powerless systems.

本研究项目的目的是提出并研究一种新的光纤无线接入系统的可行性，该系统用于高速无线通信，无需任何外部电源设施。利用所提出的光功率馈送技术，获得了15 mW的电功率和2 V的电压，因此，发现所有的电子/光学组件，包括低噪声放大器和光调制器，可以成功地驱动。采用电吸收调制器作为基站的光调制器。利用馈入光功率提供的电偏置，灵敏度提高了10 dB。低噪声放大器的设计是在10 mW的小电源条件下完成的。单级放大器的最大增益为14 dB，双级放大器的最大增益为22 dB。利用光馈入的受激拉曼效应，在10 km长的光传输线上获得了大于2 dB的光信号增益。最后，结合上述技术进行了系统实验，与现有无源系统相比，灵敏度提高了22 dB。