Presenter: Kenny Haulk

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This Week’s Highlights

• Tested Receiver with attenuation and shielding

• Measured power output from GDS1250 TX and our own VCSEL

• Alignment tolerance tests• Loopback tests with attenuation and

shielding• Start work on final paper

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Receiver Tests with Attenuation and Shielding

RX w/o shield at 5dB RX w/ shield at 5dB

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Receiver Tests with Attenuation and Shielding (continued)

RX at 10dB attenuation TX off

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Power output from lasers

• Typical power output from the GDS1250 TX is 0.364mW

• With the 5dB attenuator 0.0067mW (with the adjustment: 0.0605mW)

• Max power output from our laser is almost 2mW!

• Adjusted output to around 1mW (eyesafe)

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Eyesafe TX test

TX at 0dB TX at 5dB

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Alignment Tolerance Setup

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Alignment Tolerance Results

• Region where we get acceptable results is basically circular

• Although, we may have estimated the center wrong

• Able to get a good eye, at center, up to 820um away

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Alignment Tolerance ResultsAlignment Tolerance (z=0)

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

-30 -25 -20 -15 -10 -5 0 5 10 15 20

y-alignment

x-al

ignm

ent

1=10um

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Loopback Attenuation Tests with Shielding

5dB w/o shielding 5dB with shielding

No optical input

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Loopback Attenuation Tests with Shielding (continued)

10dB w/o shielding 10dB with shielding

15dB with shielding

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GANTT Chart

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Plans for the Coming Week

• Attempt to clean up loopback results • Complete the final paper