Wavelength hopped quantum key generation by hysteresis biasing an externally feedback kHz-linewidth DFBLD

Juu-En Wang, Chu-An Lo, Gong‐Ru Lin

Published Jan 1, 2026• 0 citations

Abstract

Wavelength hopping of a hysteresis-biased 2.3kHz-linewidth external-cavity DFBLD with grating feedback is demonstrated to injection-lock a weak-resonant-cavity laser diode for enabling multi-wavelength-channel DPS-QKD operation with <3% QBER.

DOI: 10.1364/cleo_at.2026.jtu.185

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