ECE 135 – Group 3 ECE 135 – Group 3 Presentation 4Presentation 4

Bryan ChavezBryan Chavezwith Pat Cleary & Kevin Parkerwith Pat Cleary & Kevin Parker

February 10February 10thth, 2005 , 2005

Work SummaryWork Summary

Further Research into VCSELsFurther Research into VCSELsResearched ROSA Solutions in place of Researched ROSA Solutions in place of PDsPDsFour Corners Analysis for multiple Four Corners Analysis for multiple candidate VCSELscandidate VCSELsContact vendorsContact vendorsFurther Optical Link BudgetingFurther Optical Link BudgetingTest and Build Tx BoardTest and Build Tx Board

GANTT ChartGANTT ChartID Task Name Start Finish Duration

Apr 2005Mar 2005Feb 2005Jan 2005

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3d1/21/20051/19/2005Group Management Plan

2w 4d2/7/20051/19/2005Background Research

8w4/1/20052/7/2005Board 1 Research

4w4/22/20053/28/2005Board 2 Research

1w1/28/20051/24/2005Evaluation Board Testing

1w2/4/20051/31/2005Optical Link Budget

1w2/4/20051/31/2005Part Selection

1w2/11/20052/7/2005Order VCSEL/PD’s

2w2/18/20052/7/2005Build Test Board

1w2/11/20052/7/2005Design Board 1 Schematic

1w2/18/20052/14/2005Board 1 Design

1w2/25/20052/21/2005Board 1 Design Review

1w3/4/20052/28/2005Order PCB’s

1w3/11/20053/7/2005Board 1 Construction

1w 2d3/21/20053/11/2005Spring Break

2w4/1/20053/21/2005Board 1 Testing/Troubleshooting

1w4/1/20053/28/2005Design Modifications

1w4/8/20054/4/2005Board 2 Construction

2w4/22/20054/11/2005Board 2 Testing/Troubleshooting

1w 3d4/27/20054/18/2005Final Report Prep

0w2/22/20052/22/2005Test

0w3/25/20053/25/2005Midterm Report

0w4/27/20054/27/2005Final Report

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Background Work for Four Corners Background Work for Four Corners and Optical Link Budgetand Optical Link Budget

Eye safe limit Eye safe limit →→ P Pmaxmax = 1 mW = 1 mW

From the 802.3 standard From the 802.3 standard →→ extinction ratio = 9dBextinction ratio = 9dBThus we see that PThus we see that Pminmin = P = Pmaxmax *10^(-9/10) *10^(-9/10)

PPminmin = .12589 mW = .12589 mW

Maximum Link Power Budget Loss at Rx Maximum Link Power Budget Loss at Rx from 802.3 Standard = 7.5 dBfrom 802.3 Standard = 7.5 dB

VCSEL Four Corner Analysis (A)VCSEL Four Corner Analysis (A)

HFE439x-521

Manufacturer Part I_th (mA)η (mW/mA)

I_tot(MAX) (mA)

I_tot(MIN) (mA) I_bias (mA) I_mod (mA)

Advanced Optical Components (2.5G) SC HFE439x-541 0.5 0.04 25.5000 3.6473 14.5736 21.8528

Advanced Optical Components (2.5G) SC HFE439x-541 2.5 0.04 27.5000 5.6473 16.5736 21.8528

Advanced Optical Components (2.5G) SC HFE439x-541 0.5 0.16 6.7500 1.2868 4.0184 5.4632

Advanced Optical Components (2.5G) SC HFE439x-541 2.5 0.16 8.7500 3.2868 6.0184 5.4632

VCSEL Four Corner Analysis (B)VCSEL Four Corner Analysis (B)

Manufacturer Part I_th (mA)η (mW/mA) I_tot(MAX) (mA) I_tot(MIN) (mA) I_bias (mA) I_mod (mA)

Emcore (2.5)  TO - 46 0.5 0.2 5.5000 1.1295 3.3147 4.3706

Emcore (2.5) TO - 46 2.5 0.2 7.5000 3.1295 5.3147 4.3706

Emcore (2.5)  TO – 46 0.5 0.4 3.0000 0.8147 1.9074 2.1853

Emcore (2.5) TO - 46 2.5 0.4 5.0000 2.8147 3.9074 2.1853

TO - 46

VCSEL Four Corner SummaryVCSEL Four Corner SummaryPartPart Current Current

RequirementsRequirementsConnector?Connector? NotesNotes PricePrice

AA OkOk LCLC LC OnlyLC OnlyUSAUSA

$7.25 (1k+)$7.25 (1k+)$14.50 (1-999)$14.50 (1-999)

BB ExcellentExcellent LC or SCLC or SC LC AvailableLC AvailableSC?SC?USAUSA

Unknown (1k+)Unknown (1k+)Free (small Free (small quantities)quantities)

ROSA DatasheetROSA Datasheet

ROSA Min (V/W) Typical (V/W) Max (V/W) Notes Price

Luxnet (1.25) (LC or SC)     5000   Taiwan ? 

Optowell (1.25 or 2.5) (LC or SC)     2000   Taiwan ? 

AOCtech (1.25) (SC) PTCM966-SC   .5 A/W?   USA ? 

Advanced Optical Components (up to 2.5) (SC) HFD3381-102   1400   USA

$5 (1-999)$10 (>1k) 

Advanced Optical Components (up to 2.5) (LC) HFD3180-108 1500 2500 3500 USA

$5 (1-999)$10 (>1k) 

Draft Optical Link BudgetDraft Optical Link Budget

Advanced Optical Components Advanced Optical Components HFE419x-541 with HFE419x-541 with

HFD3180-108 ROSAHFD3180-108 ROSAIth (mA)Ith (mA) 1.81.8

DC Bias of laser (mA)DC Bias of laser (mA) 10.2910.29

Slope Efficiency (mW/mA)Slope Efficiency (mW/mA) 0.1250.125

Modulation Current of Tx (mA)Modulation Current of Tx (mA) 29.136929.1369

Range of Power Output (mW)Range of Power Output (mW) 0.12589 - 1.00.12589 - 1.0

Range of Power at Rx (mW) – 7.5 dB LossRange of Power at Rx (mW) – 7.5 dB Loss .02239 - .17783.02239 - .17783

Voltage Output Range from ROSA (mV)Voltage Output Range from ROSA (mV) 55.98 – 444.5855.98 – 444.58

Voltage Input Range for Maxim 3264 (mV)Voltage Input Range for Maxim 3264 (mV) 5 - 12005 - 1200

Tx Board ConstructionTx Board Construction

Tx Board PerformanceTx Board Performance

0 dB Attenuation0 dB AttenuationBER: < 10^-9BER: < 10^-91 Minute Duration1 Minute Duration

Tx Board PerformanceTx Board Performance

10 dB Attenuation10 dB AttenuationBER: < 10^-9BER: < 10^-91 Minute Duration1 Minute Duration

Tx Board PerformanceTx Board Performance

20 dB Attenuation20 dB AttenuationBER: < 2x10^-7BER: < 2x10^-71 Minute Duration1 Minute Duration

Tx Board PerformanceTx Board Performance

30 dB Attenuation30 dB AttenuationBER: NO SIGNALBER: NO SIGNAL1 Minute Duration1 Minute Duration

Links for VCSELs & ROSAsLinks for VCSELs & ROSAs

http://www.advancedopticalcomponents.com/http://www.advancedopticalcomponents.com/documents/HFE438x-521.pdfdocuments/HFE438x-521.pdfhttp://www.emcore.com/assets/fiber/http://www.emcore.com/assets/fiber/TO462.5Gbps.pdfTO462.5Gbps.pdfhttp://www.advancedopticalcomponents.com/http://www.advancedopticalcomponents.com/product/documents/HFD3381-102.pdfproduct/documents/HFD3381-102.pdfhttp://www.advancedopticalcomponents.com/http://www.advancedopticalcomponents.com/product/documents/HFD3180-108.pdfproduct/documents/HFD3180-108.pdf

Future WorkFuture WorkOrder VCSEL/ROSAOrder VCSEL/ROSA

Build and Test Rx BoardBuild and Test Rx Board

Finalize Optical Link BudgetFinalize Optical Link Budget

Design Board 1 SchematicDesign Board 1 Schematic

Design Board 1 LayoutDesign Board 1 Layout