一种主动共存的增强型光束扩展器

An Enhanced Beam Expander with Active Coexistence

摘要:

提出了一种主动共存的增强型光束扩展器——ACEX-RE。该ACEX-RE由集成的一对混合光放大器(EDFA和SOA)和共存元件(CEX)模块组成,该模块与OLT系统一起安装在中央交换机(CO)上,分别作为下行和上行光信号的增强器和前置放大器。在下行波长和上行波长分别为1577和1270nm的情况下,对GPON和TWDM-PON共存的XGS-PON系统进行性能测试。结果表明,提出的ACEX-RE能够支持多速率XGS-PON的最大运行距离为35km,分束比为1∶128,链路损耗为44dB。

Abstract:

Proposed is an enhanced fiber expander with active coexistence (ACEX-RE), composed of a pair of integrated hybrid optical amplifiers (EDFA and SOA) and coexistence element (CEX) modules. The modules are installed on the central exchange (CO) together with the OLT system as the intensifier of downstream/upstream optical signals and the preamplifier respectively. Under the downstream and upstream wavelengths of 1577 and 1270nm, the performance of the XGS-PON system consisted of GPON and TWDM-PON was tested. The results show that the proposed ACEX-RE can support multi-rate XGS-PON with a maximum operating distance of 35km, a beam splitting ratio of 1∶128, and a link loss of up to 44dB.