access icon free Field and laboratory trials of 400GBASE-LR8 over fibre distances up to 35 km

Successful experimental demonstration and field trial of 400GBASE-LR8 is reported based on 4-level pulse amplitude modulation format over standard G.652 single-mode fibre using CFP8 pluggable optical transceivers. Stable long-term error-free performance of 400GBASE-LR8 optical signal over fibre spools of varying lengths up to 35 km is demonstrated, which is significantly longer than the IEEE standard 802.3bs specification of 10 km reach. For the first time, error-free full throughput performance of 400GBASE-LR8 over a 27 km field fibre link including optical patch panels through operational exchanges is also demonstrated. The results demonstrate that this early 400GBASE-LR8 client technology is suitable for practical network deployment scenarios and has potential for even longer reach beyond the 10 km specification.

Inspec keywords: optical fibre networks; IEEE standards; optical transceivers; local area networks; wavelength division multiplexing; optical modulation; pulse amplitude modulation

Other keywords: 400GBASE-LR8 client technology; long-term error-free performance; optical patch panels; 400GBASE-LR8 optical signal; size 27.0 km; fibre spools; fibre link; laboratory trials; 4-level pulse amplitude modulation; G.652 single-mode fibre; field trial; IEEE standard 802.3bs; size 10.0 km; CFP8 pluggable optical transceivers

Subjects: Multiplexing and switching in optical communication; Computer communications; Optical fibre networks; Optical communication equipment; Modulation and coding methods

http://iet.metastore.ingenta.com/content/journals/10.1049/el.2018.6319
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