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OT: Computer Loss in Star Coupler (Fiber Optics)

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Old 12-06-2003, 05:34 PM
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ThE sPaCeCoWbOy
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Default OT: Computer Loss in Star Coupler (Fiber Optics)

For some reason i have having trouble computing this

Does anyone have a example that they can post or find describing the steps in this...the book is not describing it well and the example they give is ****ty....and the problem in the book I am not getting

thanks,
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Old 12-06-2003, 05:44 PM
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Little more detail?

My background is optics, but I barely understand waht your asking.
Old 12-06-2003, 09:05 PM
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I have 4 nodes....

node 1 is 800 m from the start coupler
2 is 1.4km
3 is 460
4 is 1.6km

fiber loss is 2.4 db/km
connector loss is 1 db/connector....there are 16 connectors (8 on the transmission side, 8 on the recieiver side

assume that the 4x4 splitting is exact (no variation from point to point) and the directivity is like directioinality....a 2x2 (4 port) D.C.

compute the max and min possible loss between any 2 nodes in the network....

let me know if need more info...

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Old 12-06-2003, 09:55 PM
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I think its asking you to figure out the losses that are possible.

IE: Between node 2 and 4, I think the total loss would be 11.2dB, 7.2 total for the fiber itself, and 4 for the connectors, since theres 4.

I think. I just did that off the top of my head
Old 12-06-2003, 10:12 PM
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if you take the 2.4 db/km the total fiber loss is 10.224 dB

6.4 db for the connectors....

but each reciver isn't going to get the same dB going to it....

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Old 12-06-2003, 11:56 PM
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Nevermind....I figured it out....

thanks guys

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