Click the Exhibit button. Which type of multiplexer is shown in the exhibit?（）
A. Thin Film filter
B. Fiber Bragg Grating
C. Arrayed Wave Guide
D. Erbium fiber amplifier
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A. none
B. -600 ps/nm
C. -200 ps/nm
D. +200 ps/nm
E. +600 ps/nm
A.0 ps/nm
B.340 ps/nm
C.200 ps/nm
D.3400 ps/nm
E.More information is needed.
A. fiber dispersion
B. signal attenuation
C. transmitter power
D. amplifier bandwidth
E. receiver dispersion tolerance
Click the Exhibit button. When designing a DWDM system with multiple amplified spans, a pre-amp is needed at Site B to （）. (Choose three.)
A. offset the OADM loss at site b
B. overcome the high multiplexer loss at site a
C. amplify signal levels after the high loss through Fiber Span 1
D. adjust add channels at site B to be at the same level as the passthrough channels
E. ensure that the per channel power is higher than the minimum needed for the post-amp at Site b
A. The glass core is doped with an Erbium in periodic segments of the fiber.
B. Layers of high index ?and low index ?material are deposited on a glass substrate.
C. Thin layers of silica glass are placed onto wafers to produce a prism-like effect.
D. Fiber is etched with an ultraviolet laser that is precisely spaced for specific wavelength filtering.
最新試題
Which three technologies are used to reduce chromatic dispersion accumulation in fiber-optic transmission systems? （）(Choose three.)
What are three relevant design considerations when using the 15216 EDFA? （）(Choose three.)
What three in combination are factors that can cause four-wave mixing in fiber-optic cables? （）(Choose three.)
Which is a legitimate bandwidth matched pair?（）
How is UPSR and BLSR traffic rerouted during a protection switch when a complete fiber cable cut occurs?（）
Given the formula: (Fiber Attenuation * Km) + (Splice Attenuation * # of Splices) + (Connector Attenuation * # of Connectors) + (Optical Fiber or OADM) + Buffer(Fiber aging)) With regard to SONET/SDH optical calculations, what will the given formula provide?（）
SONET Code Violations (CVs) totals in the PM tables are actually an accumulation of the number of （）.
Click the Exhibit button. Given the following parameters: transmitter output (min): -2 dBm receiver input (min): -28 dBm 15216 Mux and Demux loss: 4.5 dB 16 channels maximum In which sites shown in the exhibit could the 15216 EDFAs be placed to minimize the number of EDFAs needed?（）
If node 2 is accepting line timing from node 1, node 2 will send （）to node 1 as its SSM message.
What is an advantage of an externally modulated laser over a directly modulated laser?（）