Senior Design Project: Group IVSenior Design Project: Group IV

10 Gigabit Ethernet Optical 10 Gigabit Ethernet Optical TransceiverTransceiver

Group Members: Jinesh Karia Rakesh Soni

James CummingsElisa HurwitzBishan Patel

SO FAR, SO GOOD…

• Website is up on ECE domain.• Finished building Maxim receiver board.• Researched PD and VCSEL vendors and

prices of parts.

GANTT CHARTGANTT CHARTw eek 1 w eek 2 w eek 3 w eek 4 w eek 5 w eek 6 w eek 7 w eek 8 w eek 9 w eek 10 w eek 11 w eek 12 w eek 13 w eek 14 w eek 15

9-Jan 16-Jan 23-Jan 30-Jan 6-F eb 13-F eb 20-F eb 27-F eb 7-M ar 14-M ar 21-M ar 28-M ar 4-A pr 11-A pr 18-A pr5-Jan 22-Jan 29-Jan 5-F eb 12-F eb 19-F eb 26-F eb 6-M ar 13-M ar 20-M ar 27-M ar 3-A pr 10-A pr 17-A pr 24-A pr

P ro jected P ro g ress Actu al P ro g ress R ev ised P ro g ress L ate P ro g ress

W eeks

LE G E N D

L an d m arks

R esearch

B u ild /Test D es ign

V en d or In fo & P rice

B u ild /Test B o ard

O p tica l L in k B u d g et

Alig n m en t To leran ce

An alys is an d W riteu p s

R ece iver C ircu it D es ig n

T ran sm itter C ircu it D esig n

C ircu it B o ard D es ig n

T asksS tart D ateE nd D ate

Soldering…

TECHNICALLY SPEAKING…

• VCSEL Characteristics

• Photodiode Characteristics

VCSEL Characteristics

http://standards.ieee.org/getieee802/download/802.3-2000.pdf

  Speed (Gbps)

Slope Efficiency (mW/mA), at 850 nm

Threshold current (mA)

HFE4384-522 (SC connectorized)

Minimum  1.25

0.06 1.5

Typical 0.15 3.5

Maximum 0.3 6

http://content.honeywell.com/vcsel/products/datacom.stm

802.3z Standards Vendor: Honeywell

Photodiodes

  Speed (GHz)

Responsivity

(A/W), 740 nm

Capacitance (pF)

Active Area (mm, dia.)S7911 (unconnectorized)

Typical 2 0.47 0.45 0.1

S7912 (unconnectorized)

Typical 1.5 0.47 0.85 0.2

RSC-M65A306 (connectorized)

Minimum

 1.5

0.35 -- --

Hamamatsu: http://www.hpk.co.jp/eng/products/ssd/PDF/3/S7911,S7912_KPIN1041E02.pdf

Lasermate:http://www.lasermate.com/ReGaAs.html

http://standards.ieee.org/getieee802/download/802.3-2000.pdf

802.3z Standards Vendors: Hamamatsu and Lasermate

COMING UP NEXT…

• Continue researching vendors for parts.• Completing building and testing of Maxim test

board.• Order parts from vendors.

QUESTIONS?