Optical single sideband modulation with tunable optical carrier-to-sideband ratio using a modulator in a Sagnac loop
Optical single sideband modulation with tunable optical carrier-to-sideband ratio using a modulator in a Sagnac loop
复制标题
使用萨尼亚克环路中的调制器进行具有可调谐光载波边带比的光单边带调制
DOI:
10.1016/j.optlastec.2016.12.006
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发表时间:
2017-06
影响因子:
5
通讯作者:
Jian Shuisheng
中科院分区:
文献类型:
--
作者:
Wu Beilei;Wang Muguang;Tang Yu;Sun Jian;Zhang Jing;Yan Fengping;Jian Shuisheng
We propose and experimentally demonstrate a cost-effective approach to achieve optical single sideband (OSSB) modulation with tunable optical carrier-to-sideband ratio (OCSR) based on a bi-directional use of an OSSB modulator. The key concept of the proposed scheme is to use an OSSB modulator which is incorporated in a Sagnac loop where a light wave is modulated in the form of SSB modulation along the clock-wise direction while the orthogonal light is not modulated along the counter clock-wise direction due to the velocity mismatch. The signals along two directions are combined together at the output of the Sagnac loop via a polarization beam splitter (PBS). Thus a partial orthogonal SSB (PO-SSB) modulated signal is obtained. The generated signal is then sent into a polarization controller (PC) followed by a polarizer. An OSSB-modulated signal with tunable OCSR from −10 to 27 dB is achieved by adjusting the PC in the experiment. The proposed scheme is wavelength independent, which can support low microwave bandwidth and achieve flexible wavelength tunability.
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