Experimental demonstration of single-span 100-km O-band 4×50-Gb/s CWDM direct-detection transmission.
Experimental demonstration of single-span 100-km O-band 4×50-Gb/s CWDM direct-detection transmission.
复制标题
单跨100公里O波段4×50Gb/s CWDM直检传输实验演示。
作者：
Yang Hong;N. Taengnoi;K. Bottrill;N. Thipparapu;Yu Wang;J. Sahu;D. Richardson;P. Petropoulos
我们报告什么是我们所知的最长的50 Gb/s/λ O波段波分复用（WDM）传输。采用自制的掺铋光纤放大器（BDFAs）和Kramers-Kronig检测辅助单边带传输技术，分别克服了波长扩展的O波段粗波分复用（CWDM）系统中的光纤损耗和色散。通过对基于增强器和前置放大器的4×50 Gb/s/λ放大直接检测系统的实验，我们证明了在75 km和100 km单模光纤长度下，单边带传输在光信噪比灵敏度和CWDM信道间性能均匀性方面优于双边带传输的上级性能。因此，在所有50 Gb/s通道上实现了高达100 km的传输距离和相当的性能，而无需在线光学放大。
We report on what is to the best of our knowledge the longest 50-Gb/s/λ O-band wavelength-division multiplexed (WDM) transmission. A pair of in-house built bismuth-doped fiber amplifiers (BDFAs) and the use of Kramers-Kronig detection-assisted single-sideband transmission are adopted to overcome the fiber loss and chromatic dispersion, respectively, in a reach-extended O-band coarse WDM (CWDM) system with a channel spacing of ∼10 nm. Through experiments on an amplified 4×50-Gb/s/λ direct-detection system based on booster and pre-amp BDFAs, we show the superior performance of single-sideband transmission in terms of both optical signal-to-noise ratio sensitivity and uniformity in performance amongst CWDM channels relative to double-sideband transmission after both 75-km and 100-km lengths of single-mode fiber. As a result, up to 100-km reach with comparable performance at all 50-Gb/s channels was achieved without the need for in-line optical amplification.