Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5007160 | Optics & Laser Technology | 2017 | 5 Pages |
Abstract
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 â10 to 27Â 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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Physical Sciences and Engineering
Engineering
Electrical and Electronic Engineering
Authors
Beilei Wu, Muguang Wang, Yu Tang, Jian Sun, Jing Zhang, Fengping Yan, Shuisheng Jian,