Generation of a 50-tone optical frequency comb with a tone-to-noise ratio larger than 37 dB

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• 作者：Xia Zhang^a ; ^b ; ^{wenerzhang2002@163.com" class="auth_mail} ; Jiachuan Lin^a ; Lixia Xi^a ; Xiaoguang Zhang^a ; ^{xgzhang@bupt.edu.cn" class="auth_mail} ; Chenglin Bai^b ; ^{baichenglin@lcu.edu.cn" class="auth_mail}
• 关键词：Optical communications ; Optical frequency comb ; Re-circulating frequency shifter ; Tone-to-noise ratio ; Asymmetric Mach&ndash ; Zehnder interferometer
• 刊名：Optical Fiber Technology
• 出版年：March, 2014
• 年：2014
• 卷：20
• 期：2
• 页码：116-119
• 全文大小：1135 K

文摘

By inserting an asymmetric Mach-Zehnder interferometer (AMZI) into the re-circulating frequency shift loop, we experimentally obtained a 50-tone optical frequency comb with a tone-to-noise ratio larger than 37 dB. The simulation and experimental results show that the amplified spontaneous emission (ASE) noise of the optical frequency comb can be suppressed by 3 dB after the first loop, and the tone-to-noise ratio of the 50-tone optical frequency comb is enhanced by 23.5 dB compared to that without the AMZI.