Optical Reflection Interference Equalization for Single-Wavelength Bidirectional WDM-PON Transmission System

Optical Reflection Interference Equalization for Single-Wavelength Bidirectional WDM-PON Transmission System
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单波长双向WDM-PON传输系统光反射干扰均衡

DOI:
10.1109/jphot.2020.3045049
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发表时间:
2021
影响因子:
2.4
通讯作者:
Maruta Akihiro
Maruta Akihiro
中科院分区:
工程技术4区
文献类型:
--
作者:
Shibita Sho;Hisano Daisuke;Maruta Kazuki;Nakayama Yu;Mishina Ken;Maruta Akihiro

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提出了一种在波分复用无源光网络(WDM-PON)单波长双向传输系统中使用自适应干扰均衡器消除回传光的新技术。在该方案中,相同的波长被分配给上行链路和下行链路。换句话说,与典型的PON系统相比,分配给光网络单元的波长的数量可以是一半。然而,这给我们带来了一个问题,即发射信号光的反射分量与接收信号光干涉。我们使用背靠背传输仿真和双极化正交相移键控信号传输实验研究了所提出的干扰消除均衡器的性能。结果表明,当OSNR足够大时,即使当干扰光的功率很大(即,SIR ≤ 2 dB)。
This paper proposes a novel return light cancellation technique using an adaptive interference equalizer in the wavelength division multiplexed passive optical network (WDM-PON) transmission system employing the single-wavelength bidirectional transmission scheme. In this scheme, the same wavelength is assigned to both the uplink and the downlink. In other words, the number of the wavelengths allocated to optical network units can be half compared with a typical PON system. However, this presents us with a problem in that the reflected component of the transmitted signal light interferes with the received signal light. We investigated the performance of the proposed interference canceling equalizer using back-to-back transmission simulation and a dual-polarization-quadrature-phase-shift-keying signal transmission experiment. The results indicated that the proposed adaptive equalizer enabled reception with no error when the OSNR was sufficiently large, even when the power of the interfering light was large (i.e., SIR ≳ 2 dB).
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