Choi Yong-Kyu, Hosoya Kenta, Lee Chung Ghiu, Hanawa Masanori, Park Chang-Soo
School of Information and Communications, Gwangju Institute of Science and Technology, Buk-Gu, Gwangju, South Korea.
Opt Express. 2011 Mar 28;19(7):6243-52. doi: 10.1364/OE.19.006243.
We propose and experimentally demonstrate a hybrid WDM/OCDMA ring with a dynamic add/drop function based on Fourier code for local area networks. Dynamic function is implemented by mechanically tuning the Fourier encoder/decoder for optical code division multiple access (OCDMA) encoding/decoding. Wavelength division multiplexing (WDM) is utilized for node assignment and 4-chip Fourier code recovers the matched signal from the codes. For an optical source well adapted to WDM channels and its short optical pulse generation, reflective semiconductor optical amplifiers (RSOAs) are used with a fiber Bragg grating (FBG) and gain-switched. To demonstrate we experimentally investigated a two-node hybrid WDM/OCDMA ring with a 4-chip Fourier encoder/decoder fabricated by cascading four FBGs with the bit error rate (BER) of <10(-9) for the node span of 10.64 km at 1.25 Gb/s.
我们提出并通过实验证明了一种基于傅里叶码的具有动态分插功能的混合波分复用/光码分多址（WDM/OCDMA）环网，用于局域网。动态功能通过机械调谐用于光码分多址（OCDMA）编码/解码的傅里叶编码器/解码器来实现。波分复用（WDM）用于节点分配，4芯片傅里叶码从编码中恢复匹配信号。为了获得与WDM信道良好适配的光源及其短光脉冲产生，反射半导体光放大器（RSOA）与光纤布拉格光栅（FBG）一起使用并进行增益开关操作。为了进行演示，我们通过实验研究了一个两节点混合WDM/OCDMA环网，该环网具有一个由四个FBG级联制成的4芯片傅里叶编码器/解码器，在1.25 Gb/s下，对于10.64 km的节点跨度，误码率（BER）<10^(-9)。
