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High spectral purity optical source stabilized on a fiber ring resonator

Gilles Bailly 1 Olivier Llopis 2 Arnaud Fernandez 2
1 LAAS-I2C - Service Instrumentation Conception Caractérisation
LAAS - Laboratoire d'analyse et d'architecture des systèmes
2 LAAS-MOST - Équipe Microondes et Opto-microondes pour Systèmes de Télécommunications
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : This paper demonstrates the stabilization of an external cavity semiconductor laser at 1550 nm on an ultra-high Q factor fiber ring resonator (FRR). Based on a Pound-Drever-Hall technique, our system is optimized in order to take into account the properties of the FRR which features a large Q factor (2 10^9) but a relatively small free spectral range (2 MHz). The measured performances of the stabilized laser shows a frequency noise level as low as 0.4 Hz^2 /Hz in the 1 kHz to 10 kHz range and a linewidth lower than 30 Hz for 5 ms integration time.
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Submitted on : Thursday, February 6, 2020 - 6:03:48 PM
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Gilles Bailly, Olivier Llopis, Arnaud Fernandez. High spectral purity optical source stabilized on a fiber ring resonator. IEEE Photonics Technology Letters, Institute of Electrical and Electronics Engineers, 2020, 32 (5), pp.255 - 258. ⟨10.1109/LPT.2020.2970269⟩. ⟨hal-02469863⟩

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