Integrated polarization tracking and control for enhanced performance in polarization multiplexed self-coherent detection

Satish Kumar Thakur; Ashay Atkar; Anamika Singh; Prabhat Kumar Sharma

doi:10.1117/12.3002468

12 March 2024 Integrated polarization tracking and control for enhanced performance in polarization multiplexed self-coherent detection

Satish Kumar Thakur, Ashay Atkar, Anamika Singh, Prabhat Kumar Sharma

Author Affiliations +

Proceedings Volume 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII; 128890X (2024) https://doi.org/10.1117/12.3002468
Event: SPIE OPTO, 2024, San Francisco, California, United States

Conference Poster

Abstract

The construction of optical receivers using heterodyne detection techniques is a significant challenge due to the need for complex and power-intensive DSP approaches. Additionally, it is practically difficult to construct a local oscillator laser at the receiver that has the same frequency as the carrier laser for homodyne detection. Therefore, we propose a polarization multiplexed self-coherent detection method that sends both the message signal and the carrier through the same fiber while utilizing polarization diversity. Quadrature Amplitude Modulation is used for modulating the message signal. The system is capable of transmitting a data rate of 150 Gbps. We demonstrate an integrated polarization stabilizer that consists of cascaded Mach-Zehnder interferometers with a fast-tracking algorithm that can track the polarization of an incoming signal at the receiver and an integrated polarization converter based on Stokes vector that minimizes the effect of mixing of signals of orthogonal polarizations in the optical fiber. The algorithm used to feed the polarization controller can change the polarization of an incoming signal at the receiver to the polarization it had when it left the transmitter. Consequently, reducing the impact of PMD (Polarization mode dispersion) on transmission in fiber.

Citation Download Citation

Satish Kumar Thakur, Ashay Atkar, Anamika Singh, and Prabhat Kumar Sharma "Integrated polarization tracking and control for enhanced performance in polarization multiplexed self-coherent detection", Proc. SPIE 12889, Integrated Optics: Devices, Materials, and Technologies XXVIII, 128890X (12 March 2024); https://doi.org/10.1117/12.3002468

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