Distortion Comparison of Single-Sideband Coherent Analog Optical Links Employing X-Cut and Z-Cut Mach-Zehnder Modulators

被引：2

作者：

Zhu, Guanghao ^{[1
]}

Bortnik, Bart ^{[1
]}

Liu, Wei ^{[1
]}

Fetterman, Harold R. ^{[1
]}

Forber, Richard ^{[2
]}

Wang, Wen C. ^{[2
]}

机构：

[1] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA

[2] IPITEK Inc, Carlsbad, CA 92008 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2008年 / 20卷 / 17-20期

关键词：

Coherent optical link; electrooptic modulation; intermodulation distortion; suppressed carrier;

D O I：

10.1109/LPT.2008.927911

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A single-sideband coherent analog optical link is implemented using a null-biased Mach-Zehnder (MZ) intensity mod ulator followed by a narrowband optical bandpass filter. The fidelity performance of such a link is compared between cases with X-cut and Z-cut MZ LiNbO3 modulators. It is shown that for the case of Z-cut modulators, the converted radio-frequency output contains higher nonlinear distortions. Under the same operating condition, the spurious-free dynamic range of an X-cut link outperforms that of a Z-cut link by 2.6 dB.

引用

页码：1548 / 1550

页数：3

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