Optical Interconnects for Computing Applications MicroPOD

Report
Optical Interconnects for Computing Applications
Optical Interconnects for
Computing Applications
Mitchell Fields, Ph. D.
[email protected]
Page 1
Your Imagination, Our Innovation
Optical Interconnects for Computing Applications
Your Imagination, Our Innovation
Evolution of high-bandwidth interconnects
Throughout history, optical interconnects
were adopted when they overcame
limitations of electrical signaling:
Distance / Bandwidth / Density / Power
Computing
For optical interconnects in computing environments,
COST and POWER are the most critical metrics.
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Optical Interconnects for Computing Applications
Your Imagination, Our Innovation
Modules targeted at different design points
Platform
Application range
Aggregate bandwidth
IC technology
Laser source
Receiver
Electrical socket
Optical connector
Footprint (with and w/o socket
and optical connector)
Power (mW/Gbps)
Nominal reach (m)
Diagnostic capability
Signal integrity features
Page 3
AFBR-75
MicroPOD
Consumer and low-BW
computer interconnects
20G
CMOS
HPC and high-BW
system interconnects
120G
BiCMOS
2xVCSEL array
12xVCSEL array
2xPiN array
Socket
J-cable
12x12x2
16x16x2.3
14
30
12xPiN array
mLGA
Prizm
7.8x8.2x3.9
10.7x11.1x7.1
25
100
ID and basic alarms
Full diagnostics
None
Equalization and
de-emphasis
Optical Interconnects for Computing Applications
Your Imagination, Our Innovation
MicroPOD: Driven by high-performance computing
MicroPOD:
8.2mmx7.8mm 12-channel
10G Tx and Rx modules
HPC Challenge:
Partnership for
Unprecedented sustained differentiation
computing power
IBM Hub Module: IBM Power775 drawer: IBM Power775
Datacenter in a rack:
28 Tx/Rx MicroPOD pairs 8 Hub modules
12 drawers / ~100TF
(~6 Tbps I/O!)
To build the world’s most powerful computing system, IBM required
a novel optical interconnect. MicroPOD was designed for low cost
and high performance.
Page 4
Optical Interconnects for Computing Applications
Your Imagination, Our Innovation
AFBR-75 Optical Module detailed overview
2 Photo-detectors
Module
PCB
Electrical
Alignment hole
Tx1
Tx2
Avago
Rx1
Rx2
Optical
Transceiver
IC
Optical
12mm x 12mm
Module Lens
IC
2 Lasers
Optics for the consumer market utilized for computer networking.
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