800 Gb/s/200 m FSO link with a WDM-PAM4 scheme and SLM-based beam tracking technology.
Opt Lett
; 46(6): 1269-1272, 2021 Mar 15.
Article
en En
| MEDLINE
| ID: mdl-33720164
ABSTRACT
An 800 Gb/s/200 m free-space optical (FSO) link with a wavelength-division multiplexing (WDM)-four-level pulse amplitude modulation (PAM4) scheme and spatial light modulator (SLM)-based beam tracking technology is constructed. To the best of our knowledge, this is the first one that adopts a WDM-PAM4 scheme and an SLM-based beam tracking technology to simultaneously afford a high transmission capacity of 800 Gb/s and resolve the laser beam misalignment problem due to target device movement. By adopting a 16-wavelength WDM-PAM4 scheme, the transmission capacity of the FSO link is considerably enhanced with an 800 Gb/s (50Gb/sPAM4/λ×16λ) total capacity. By deploying an SLM-based beam tracking technology, the laser beam misalignment problem is practically resolved for providing an FSO link with high link accessibility. This demonstrated WDM-PAM4 FSO link fully meets the requirements of high-speed, long-reach, and high-reliability transmissions.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2021
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Article