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arXiv · 2604.01623

Frequency-switching Coherent Reception for Hardware-efficient High-baud-rate Optical Transmission Experiments

Hiroshi Yamazaki·Kohki Shibahara·Masanori Nakamura·Takayuki Kobayashi·Toshikazu Hashimoto·Yutaka Miyamoto
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Abstract

We investigate frequency-switching coherent reception (FSCR), a hardware-efficient technique for offline coherent optical signal characterization in laboratory environments, enabling bandwidth extension without costly and hardware-intensive parallel receiver architectures. By combining signal gating and local-oscillator frequency switching, FSCR captures multiple spectral slices sequentially using a single receiver front-end and oscilloscope. We experimentally demonstrate characterization of signals at symbol rates up to 288 GBaud beyond the receiver bandwidth limit.

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Hiroshi Yamazaki, Kohki Shibahara, Masanori Nakamura, Takayuki Kobayashi, Toshikazu Hashimoto, Yutaka Miyamoto. 2026-04-02. Frequency-switching Coherent Reception for Hardware-efficient High-baud-rate Optical Transmission Experiments. https://arxiv.org/abs/2604.01623

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