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21 November 2019 Photonic triangular waveforms generation based on nonlinear polarization rotation using a highly nonlinear fiber
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Abstract

We propose a photonic approach to generate triangular waveforms based on nonlinear polarization rotation (NPR) effect in a highly nonlinear fiber. A continuous wave probe light is polarization rotated by an intensity-modulated control light through the NPR effect. By tuning the cascaded polarization controller, the undesired second-order harmonic is well suppressed after photodetection. A 90-deg hybrid coupler is used to compensate the phase mismatch between the fundamental and third-order harmonic components, so that triangular waveforms are generated successfully. The proposed approach is theoretically analyzed and experimentally verified. Triangular waveforms at repetition rates of 3, 4, and 5 GHz with full-duty cycle are experimentally generated.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Mengxiang Gao, Sha Zhu, Xiaojie Fan, Ming Li, Ning Hua Zhu, and Wei Li "Photonic triangular waveforms generation based on nonlinear polarization rotation using a highly nonlinear fiber," Optical Engineering 58(11), 110501 (21 November 2019). https://doi.org/10.1117/1.OE.58.11.110501
Received: 13 September 2019; Accepted: 6 November 2019; Published: 21 November 2019
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