Details

Autor(en) / Beteiligte

• Yu, Yuanjie
• Dai, Shiyun
• Wu, Qiang
• Long, Yu
• Liu, Ai
• Cai, Peng
• Huang, Ligang
• Gao, Lei
• Zhu, Tao

Titel

All-optical polarization scrambler based on polarization beam splitting with an amplified fiber ring

Ist Teil von

• Optics express, 2024-05, Vol.32 (11), p.19210-19220

Ort / Verlag

United States

Erscheinungsjahr

2024

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• Optical-fiber-based polarization scramblers can reduce the impact of polarization sensitive performance of various optical fiber systems. Here, we propose a simple and efficient polarization scrambler based on an all-optical Mach-Zehnder structure by combining a polarization beam splitter and an amplified fiber ring. To totally decoherence one polarization split beam, a fiber ring together with an amplifier is incorporated. The ratio of two orthogonal beams can be controlled by varying the amplification factor, and we observe different evolution trajectories of the output state of polarizations on the Poincaré sphere. When the amplification factor exceeds a certain threshold, the scrambler system exhibits nearly ideal polarization scrambling behavior. A commercial single wavelength laser with a linewidth of 3 MHz is utilized to characterize the scrambling performance. We found that when the sampling rate is 1.6 MSa/s, a scrambling speed up to 2000krad/s can be obtained for the average degree of polarization being less than 0.1. We also exploit these random polarization fluctuations to generate random binary numbers, indicating that the proposed technique is a good candidate for a random bit generator.