Crosstalk-Mitigated AWGR-Based Two-Dimensional IR Beam-Steered Indoor Optical Wireless Communication System With a High Spatial Resolution
Crosstalk-Mitigated AWGR-Based Two-Dimensional IR Beam-Steered Indoor Optical Wireless Communication System With a High Spatial Resolution
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基于 AWGR 的串扰抑制高空间分辨率二维红外波束控制室内光无线通信系统
DOI：
10.1109/jlt.2019.2917835
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发表时间：
2019-08
影响因子：
4.7
通讯作者：
Koonen Ton
中科院分区：
文献类型：
--
作者：
Zhang Xuebing;Li Chao;Jiao Yuqing;Tangdiongga Eduward;Liu Yu;Cao Zizheng;Koonen Ton
提出了一种用于室内应用的基于阵列波导光栅路由器(AWGR)的二维红外波束导引光无线通信系统中的串扰抑制传输方案。通过在奇偶AWGR信道之间建立极化正交性，在实验上实现了频谱重叠的AWGR信道之间的高串扰容限。因为在光电二极管中，具有正交偏振态的两个信号不会彼此跳动。正交偏振态上的光串扰在检测时不会产生拍音，因此可以大大减少电域中的串扰。减少串扰会减少所需的频谱保护频带和/或提高对频谱重叠的容忍度，从而实现更高的频谱效率。此外，通过简单地缩短片上相邻输出波导之间的空间间隔，可以增加AWGR的端口数。较高的端口号可以支持舵式OWC系统的高空间分辨率。这种技术还可以容忍AWGR和激光器之间的波长失调，这使得低串扰AWGR和高波长稳定激光器的设计变得容易。在1.2m自由空间链路上实验证明了一种20Gbit/S数据速率、四电平脉冲幅度调制OWC传输。实验结果表明，该方案能够保持稳定、低串扰的影响，并且响应度有明显的提高。
In this paper, a crosstalk-mitigated transmission scheme in arrayed waveguide grating router (AWGR) based two dimensional infrared beam-steered optical wireless communication (OWC) system is proposed for indoor applications. By creating polarization orthogonality between the odd and even AWGR channels, high crosstalk tolerance between spectrally overlapping AWGR channels is realized experimentally. Because two signals with orthogonal polarization states will not beat with each other in a photodiode. The optical crosstalk on the orthogonal polarization state will not generate a beat note upon detection and thus crosstalk in the electrical domain can be largely reduced. Reduced crosstalk leads to a reduction in the required spectral guard band and/or an improved tolerance to spectral overlap, which allows higher spectral efficiency. Moreover, the port number of an AWGR can be increased by simply shortening the spatial gap between adjacent output waveguides on a chip. The higher port number can support the high spatial resolution of the steered OWC system. This technique can also tolerate the wavelength misalignment between AWGRs and lasers, which relaxes the design of low crosstalk AWGRs and high wavelength stable lasers. A 20 Gbit/s data rate, four-level pulse amplitude modulation OWC transmission has been experimentally demonstrated over 1.2-m free-space link. The experimental results show that the proposed scheme can maintain stable, low crosstalk impact with an apparent improvement of the responsivity.
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DOI：
10.1002/0471213756
发表时间：
1999-06
期刊：
--
影响因子：
--
作者：
C. Madsen;Jian H. Zhao
通讯作者：
C. Madsen;Jian H. Zhao
影响因子：
3.6
作者：
Xuebing Zhang;Z. Li;Jianping Li;Changyuan Yu;A. Lau;Chao Lu
通讯作者：
Xuebing Zhang;Z. Li;Jianping Li;Changyuan Yu;A. Lau;Chao Lu
影响因子：
4.7
作者：
A. Gómez;K. Shi;C. Quintana;R. Maher;G. Faulkner;P. Bayvel;B. Thomsen;D. OBrien
通讯作者：
A. Gómez;K. Shi;C. Quintana;R. Maher;G. Faulkner;P. Bayvel;B. Thomsen;D. OBrien
影响因子：
4.7
作者：
A. Koonen;E. Tangdiongga
通讯作者：
A. Koonen;E. Tangdiongga
DOI：
10.1109/oecc.2017.8115031
发表时间：
2017-11
期刊：
2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)
影响因子：
--
作者：
T. Koonen;A. Khalid;Joanne Oh;F. Gomez-Agis;E. Tangdiongga
通讯作者：
T. Koonen;A. Khalid;Joanne Oh;F. Gomez-Agis;E. Tangdiongga