1. Fred Sugihwo, Jonathan King
OM3 PIE vs launch
Fred Sugihwo, Jonathan King
13th Dec 2004

2. OM3 PIE-D measurements TIA 2.2 demo fibres, 300m
Step response of channel measured using representative 10G TOSA DML transmitter and 10G ROSA
Isolated '1' synthesized from step response, and PIE-D calculated according to Bhoja_1_0704
13th Dec 2004

3. Launch Configurations
SM Center Launch
MCP Launch
MMF
MMF Tx Rx Tx Rx
MCP
SMCL + Connector Offset Launch
MCP + Connector Offset Launch
MMF
MMF Tx Tx Rx Rx
6um SM-MM offset
MCP
7um MM-MM offset
13th Dec 2004

4. OM3: effect of launch on TIA 2.2 demo reels
SMCL
SMCL + offset
50mm MCP
50mm MCP + offset
MMCL
B-Blue
2.784
4.866
3.685
5.969
3.905
B-Brown
2.511
3.517
5.034
7.5
3.335
B-Gray
2.388
3.311
5.416
7.601
3.336
B-Green
2.589
3.601
4.958
5.988
3.375
B-Orange
2.554
3.936
5.487
6.573
3.526
B-White
2.673
4.904
5.067
7.560
3.668
O-Aqua
2.422
3.003
4.604
6.980
3.260
O-Black
2.621
5.288
5.050
7.318
3.597
O-Pink
2.588
3.435
3.992
4.968
3.584
O-Purple
2.579
5.102
5.774
5.668
3.858
O-Red
2.408
3.828
5.343
7.672
3.298
O-Yellow
2.270
2.708
4.441
6.367
3.044
Worst case PIE-D
Color code
Red: >5.5dB PIE-D
Yellow: 4-5.5dB PIE-D
Green: <4dB PIE-D
Best launch for OM3 fibers is single-mode centre launch
13th Dec 2004

5. OM3: effect of launch on TIA 2.2 demo reels
Input patchcord manipulated to give highest PIE-D
Best launch for OM3 fibers is single-mode centre launch
Direct centre launch into MMF also viable
50um offset launch results in significantly higher PIE-D
13th Dec 2004