Transmission of precise phase coherent optical signals using a VCSEL stabilization system

To improve the time and frequency reference standards used for radio astronomy and high precision atomic physics applications, we describe a novel stable frequency transmission technique. The approach uses a vertical-cavity surface- emitting laser (VCSEL) based phase correction actuator. Using a fre...

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Bibliographic Details
Published in:Optoelectronics letters 2019-05, Vol.15 (3), p.200-203
Main Authors: Wassin, Shukree, Isoe, George, Leitch, Andrew, Gibbon, Tim
Format: Article
Language:English
Subjects:
Actuators
Atomic physics
Error correction
Feedback control
Lasers
Noise control
Optical communication
Optical Devices
Optical properties
Optics
Phase error
Photonics
Physics
Physics and Astronomy
Radio astronomy
Vertical cavity surface emission lasers
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Summary:To improve the time and frequency reference standards used for radio astronomy and high precision atomic physics applications, we describe a novel stable frequency transmission technique. The approach uses a vertical-cavity surface- emitting laser (VCSEL) based phase correction actuator. Using a frequency mixing process for feedback control, the phase noise induced along the 26 km G.655 optical fibre link was actively reduced. This was achieved by using a 1 310 nm dither controlled VCSEL phase error correction actuator together with the inherent chromatic dispersion properties of the fibre. The technique corrects phase noise and optical signal drift along the fibre at the transmission end. Fractional frequency instabilities across the G.655 fibre link of 4.44×10 −12 at 1 s and 4.86×10 −14 at 10 4 s are successfully reported.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-019-8128-z