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Upgradable radio-over-fiber transport system

机译:可升级的光纤无线电传输系统

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摘要

An upgradable radio-over-fiber (RoF) transport system is proposed based on a vertical-cavity surface-emitting laser (VCSEL)-composed wavelength selector. The passband window of the wavelength selector can be electrically adjusted to select a specific lightwave from multiple injected optical carriers and attenuate the others. By adding the VCSEL-composed wavelength selector installed inside each base station (BS), the proposed transport system can remain as the original tree topology, but its overall network capacity can be flexibly extended (reduced) by adding (removing) an additional optical carrier into (out of) the optical network. Each BS can dynamically receive data from one of the multiple injected optical carriers. This method is useful because the bandwidth requirement of each BS, which is serviced by an RoF transport system, may significantly change with the visitor flow rate. Experimental results prove that the BSs in the proposed upgradable RoF transport system can be reallocated to multiple logical RoF links and can be dynamically switched to receive data from any one of the logical RoF signals without modifying the original network structure. The transmission performances of these optical carriers are ensured by low bit error rate, clear eye, and optical/electrical spectra diagrams.
机译:提出了一种基于垂直腔面发射激光器(VCSEL)组成的波长选择器的可升级光纤传输系统。可以选择波长选择器的通带窗口,以从多个注入的光载波中选择特定的光波,并衰减其他光波。通过添加安装在每个基站(BS)内的由VCSEL组成的波长选择器,可以将建议的传输系统保留为原始树形拓扑,但是可以通过添加(移除)附加的光载波来灵活地扩展(减少)其总体网络容量。进入(出)光网络。每个BS可以动态地从多个注入的光载波之一接收数据。该方法是有用的,因为由RoF传输系统服务的每个BS的带宽需求可能会随着访问者流量的变化而显着变化。实验结果证明,所提出的可升级RoF传输系统中的BS可以重新分配到多个逻辑RoF链路,并且可以动态切换以从任何一个逻辑RoF信号接收数据,而无需修改原始网络结构。这些光学载波的传输性能通过低误码率,清晰的眼睛和光电频谱图来确保。

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