Optical QPSK/16QAM modulation based on serial-parallel MZM scheme in radio-over-fiber system     

李迎春  邹是桓  魏林  蔡尤美  叶家俊  林如俭 《上海大学学报(英文版)》2011,15(1):12-15

A novel scheme of optical modulation in 40 GHz radio-over fiber (RoF) system is proposed. It generates optical QPSK/16QAM signals in a serial-parallel structure of Mach-Zehnder modulators (MZMs). The millimeter-wave is obtained with optical frequency multiplication (OFM). Furthermore, modulation on optical-wave is transferred onto millimeter-wave. It can be used to increase transmission capacity of millimeter-wave RoF systems.  相似文献   

Using Brillouin fiber-optic ring laser to provide base station with uplink optical carrier in a 10 GHz radio over fiber system     

陈昊硕  林如俭  叶家骏 《上海大学学报(英文版)》2009,13(6):450-453

In this paper, a 10 GHz radio over fiber system is analyzed. The Brillouin fiber-optic ring laser is used in the
center station (CS) to suppress the optical carrier for the modulation depth enhancement. Simultaneously, the Stockes wave
induced by the Brillouin amplification injects and locks the Fabry-Perot (FP) laser to output a signal-mode optical source,
which works as the uplink optical carrier.  相似文献   

以太无源光网络接入控制器的实现   总被引：1，自引：0，他引：1  

邹君妮  陈健  林如俭 《上海大学学报(英文版)》2006,10(5):425-430

1IntroductionWith the developing of packet switching and trans-mission technologies,many IP-oriented applicationshave experienced a substantial growth,makingit pos-sible for various real-ti me broadband video servicesviathe Internet.However,current access networktechnologies can only offer512k-2M subscriberbandwidth,whichis unable to meet the broadband de-mand of emerging3Tnet services such as high-defini-tion video(HDTV)and real-ti me network TV broad-cast.Therefore,the access network sti…  相似文献