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首页> 外文期刊>Journal of Lightwave Technology >The Impact of Effective Modal Bandwidth on 100G SWDM Transmission Over 250 m OM5 and Left-Tilt OM4 Multimode Fibers
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The Impact of Effective Modal Bandwidth on 100G SWDM Transmission Over 250 m OM5 and Left-Tilt OM4 Multimode Fibers

机译：有效模态带宽对250 m OM5和左倾斜OM4多模光纤上100G SWDM传输的影响

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摘要

We demonstrate 100G SWDM4 transmission over 250 m OM5 and left-tilt OM4 multimode fibers. The OM5 fibers are compliant to TIA-492AAAE and the left-tilt OM4 fibers are compliant only to TIA-492AAAD and have a bandwidth peak at a wavelength longer than 850 nm. The “left-tilt” descriptor refers to the leftward leaning slope of the differential mode delay peaks. This is an indication that the peak bandwidth is at a wavelength longer than the measurement wavelength. To measure the margin to the forward error correction limit, 24 250 m channels were constructed from two links of 100 m and 150 m using either left-tilt OM4 or OM5 fiber. Error-free performance was achieved with each of the 24 OM5 channels. None of the 24 left-tilt OM4 channels achieved error-free performance. To further characterize performance, the effective modal bandwidth was measured for 6 left-tilt OM4 fibers and 12 OM5 fibers from the same spools as the fibers used in the margin measurements. The OM4 fibers all have a left tilt at 850 nm and the OM5 fibers have either a left or right tilt. Bit error ratio (BER) versus received power was then measured over 250 m of these fibers. With the OM4 fibers, the long wavelength channels limited the system performance due to low modal bandwidth at longer wavelengths despite the left tilt at 850 nm. We demonstrate the relationship between effective modal bandwidth at 953 nm and BER performance at 910 and 940 nm.
机译：我们演示了在250 m OM5和左倾斜OM4多模光纤上的100G SWDM4传输。 OM5光纤符合TIA-492AAAE，左倾斜OM4光纤仅符合TIA-492AAAD，并且在波长大于850 nm时具有带宽峰值。 “左倾斜”描述符是指差模延迟峰的向左倾斜。这表明峰值带宽的波长大于测量波长。为了测量到前向纠错极限的余量，使用左倾OM4或OM5光纤从100 m和150 m的两个链路中构建了24 250 m通道。 24个OM5通道均实现了无差错性能。 24个左倾斜OM4通道均未实现无错误性能。为了进一步表征性能，针对与余量测量中所用光纤相同的线轴，对6根左倾斜OM4光纤和12根OM5光纤测量了有效模态带宽。 OM4光纤全都在850 nm处向左倾斜，而OM5光纤全都向左或向右倾斜。然后在这些光纤的250m上测量误码率（BER）与接收功率的关系。使用OM4光纤，尽管在850nm处有左倾角，但由于较长波长下的模态带宽较低，因此长波长通道限制了系统性能。我们证明了953 nm的有效模态带宽与910和940 nm的BER性能之间的关系。

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