Using Silicon Photonics to Address Tradeoffs of Cost, Power, Speed & Complexity

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Arlon Martin is Sr. Director of Marketing at Mellanox. At the recent DesignCon 2014 conference, his presentation entitled, “Using silicon photonics to address the address the tradeoffs of cost, power, speed and complexity,” was part of panel discussion on “Optical System Technologies and Integration.”

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Using Silicon Photonics to Address Tradeoffs of Cost, Power, Speed & Complexity

  1. 1. Using silicon photonics to address the tradeoffs of cost, power, speed, and complexity Arlon Martin arlonm@mellanox.com
  2. 2. Constraint: How do we fit 100G in QSFP? Mellanox SX6036 – Example of 36 QSFP Ports Switch • • • • • QSFP is the most popular 4-channel form factor Enables 36 ports in a 1ru switch Physical size requires intensive optical integration Max power consumption of 3.5W Must support reaches of >2 km
  3. 3. Examples of silicon photonics Tx and Rx chips Integration: 100 Gb/s Tx and Rx chips Simple FTTH style laser Single laser for 4 channels Integrated modulators and detectors Santa Clara, CA USA October 2013 Splitter Lasers Modulators Ge PDs
  4. 4. Silicon photonics cost tradeoffs √ Use CMOS where ever possible √ No WDM specific lasers, no laser sub-assembly (no isolators, beam collimators, lens cap, etc.) √ Flip-chip laser array bonding √ No hermetic packages √ No active laser alignment √ No detector sub assembly √ No TEC √ No WDM assembly √ Die attach driver array √ Die attach TIA array Santa Clara, CA USA October 2013 4
  5. 5. Silicon photonics enables 100G in QSFP • Implements the best tradeoffs for data center applications • Fits in standard QSFP • Supports reaches of > 2km • Consumes < 3.5W of power • Incorporates a host of low-cost techniques

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