presenter: nassisa-geda techane. 2 highlights of the last two weeks midterm paper done! more tests...

Presenter: Nassisa-Geda Techane

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Highlights of the Last Two Weeks

• Midterm paper done!

• More tests to be performed on the board– Awaiting calibrated optical test equipment.

• Weekly meetings conducted as usual (2x/wk)

• GANTT chart updated

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The Midterm Paper

• What’s in the paper?

• Conclusions:

• the board is functional

• time and financial constraints satisfied

• group management proved effective

Baseline: Rx

Baseline: Tx

Loop-back

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More on the Loop-Back Test

• Loop-back test with a 5-dB attenuator: (VCSEL @ max Ibias & Imod)

i. between the VCSEL and PD– no perceivable eye-diagram

ii. between the VCSEL and the Rx of GDS1250– clear eye-diagram

• Why?– not enough P from the VCSEL, even @ max Ibias & Imod

– PD not sensitive enough to discern attenuated signal

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Preparation for Run-2

• More tests pending – Awaiting calibrated optical test equipment.

• What’s next:– Financial budget:

• out of the $350.00, $142.55 left for Run-2– Time:

• the design of Run-2 running late; HOWEVER,– things won’t go bad since the schedule is revised

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Plans for the Coming Week

• Perform the remaining tests as the calibrated optical test equipment becomes available.

• Start designing Run-2• Finalize the budget/vendor details for Run-2• …• And, the weekly meetings