5.8 Suppose that the optical power emerging from a feeder fiber is to be distrib
ID: 1414065 • Letter: 5
Question
5.8 Suppose that the optical power emerging from a feeder fiber is to be distributed among eight individual houses. Assume that they are separated by 100 m and lie along a straight line going out from the end of the feeder fiber. One way to distribute the power is to use a 1 x 8-star coupler and run individual fibers to each house. Why is this preferable to the configuration where a single fiber runs along the line to the homes and individual tap couplers in the fiber line each extract 10 percent of the power from the line for each house that the line passes?
5.9 Derive Eq. (5.9), which gives the common core area of two identical step-index fibers of radius a that are axially misaligned by a separation d (see Figure 5.22).
Figure 5.22. Axial offset reduces the common core area of two fiber end faces. (a) lateral view; (b) end view.
5.10 (a) From Eq. (5.9), what is the loss for identical step-index multimode fibers with radius a = 25?m if the axial offset d = 1?m?
(b) What is the axial offset loss for identical step-index single-mode fibers with radius a = 4.5 ?m if the axial offset d = 0.3 ?m?
Acommon-2a2 arc cos common 2a arc cosda1 2a 2a Lateral offset d Lateral offset d Radius a Fiber core Common core areaExplanation / Answer
As the power will be dependent on the line length , if every indivisual taps power from the line.
In this case the power will be coorelated to each others load.
When a star 1-8 convertor is used the lines run independent of one another and are length independent.
Hence no power dependency on each others load.
Please post seperate questions seperately
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.