Subharmonic injection-locked photonic integrated thin-film lithium niobate optoelectronic oscillator.

ABSTRACT: Integrated optoelectronic oscillators (OEOs) have emerged as pivotal enablers of compact, energy-efficient solutions for generating high-frequency radio-frequency (RF) signals with exceptional spectral purity - an essential demand in the advancement of radar and communication technologies. Yet, the quest for ultra-low phase noise near the carrier remains hampered by laser frequency instability and environmental fluctuations. In this work, we unveil the first photonic-integrated, high-order subharmonic injection-locked OEO realized on a thin-film lithium niobate (TFLN) platform, seamlessly uniting a Mach-Zehnder modulator (MZM) and an add-drop microring resonator (MRR) in a monolithic architecture. By harnessing an external RF source operating at a fractional subharmonic (1/2N, with

SUBMITTER: Huang Z 

PROVIDER: S-EPMC12714060 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature