Full-Duplex Radio-on-Fiber Transport system

• Main Authors: Ming-Huei Shiu, 徐銘輝
• Other Authors: 曾世杰
• Format: Others
• Language: en_US
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/8m22gf

碩士 === 國立臺北科技大學 === 光電工程系研究所 === 96 === 　　Radio-on-Fiber (ROF), the integration of broadband wireless communication and optical system, is a promising technology to realize high speed access network with increasing the capacity as well as decreasing the cost. 　　In the first architecture, we propose a radio-on-multimode fiber (MMF) system based on vertical-cavity surface-emitting lasers (VCSELs) injection-locked and optoelectronic feedback techniques is proposed and demonstrated. The injection-locking and optoelectronic feedback achieves large frequency response of VCESL, in which resulting in good performances of intermodulation distortion to carrier ratio (IMD/C), error vector magnitude (EVM), and bit-error rate (BER). Using VCSELs as optical sources in radio-on-MMF systems are very attractive, as they are relatively simple to fabricate and potentially low-cost. Such a proposed radio-on-MMF system is suitable for the short-haul microwave optical link. 　　In the second architecture, A full-duplex radio-on-fiber (ROF) transport system based on an Fabry-Perot laser diode (FP-LD) with an optical band-pass filter (OBPF) at the CS, as well as employed an optical circulator (OC) with a fiber Bragg grating (FBG) at the BS, is proposed and demonstrated. Good transmission performances estimated by bit-error rate (BER) and eye diagram are obtained in our proposed systems. Since our proposed systems use only an FP-LD as light source for both down-link and up-link transmissions, it reveals a prominent alternative with advantages in simplicity and cost.