Novel optical packet with non-return-to-zero label and duobinary carrier-suppressed return-to-zero payload
Novel optical packet with non-return-to-zero label and duobinary carrier-suppressed return-to-zero payload
复制标题
具有不归零标签和双二进制载波抑制归零有效负载的新型光包
DOI：
10.3788/col20080602.0096
复制
发表时间：
2008-02
影响因子：
3.5
通讯作者：
中科院分区：
文献类型：
--
作者：
提出了一种基于非归零（NRZ）标记和双二进制载波抑制归零（DCS-RZ）净荷的光分组交换网络分组格式。NRZ标签之后是具有一定保护时间的DCS-RZ有效载荷。低速率NRZ标签的频谱位于光载波频率附近，其中由于DCS-RZ调制，高速率DCS-RZ有效载荷的相应频谱的一些部分已经被抑制。在交换节点处，标签或有效载荷提取可以分别简单地通过光学带通滤波器或陷波滤波器来实现。在著名的虚拟光子学设计平台上进行了仿真，验证了方案的可行性。（VPI）。通过分析误码率和对比度性能，讨论了光滤波器带宽对接收信号质量的影响。
A novel packet format with non-return-to-zero (NRZ) label and duobinary carrier-suppressed return-to-zero (DCS-RZ) payload is proposed for optical packet switching networks. NRZ label is followed by DCS-RZ payload with a certain guard time. The spectra of the low-rate NRZ label locate around the optical carrier frequency where some parts of the corresponding spectra of the high-rate DCS-RZ payload have been suppressed due to DCS-RZ modulation. At the switching node, the label or payload extraction can be realized simply through an optical bandpass or notch filter respectively. The feasibility of the scheme is verified by the simulation on the famous photonic design platform designed by Virtual Photonics Inc. (VPI). The effects of optical filter bandwidth on the received signal quality are discussed by analyzing bit error rate (BER) and contrast ratio performances.