Silicon Photonics On-Wafer Test

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Silicon Photonics on-wafer Tests

Silicon Photonics Probe Systems
electrical-test wafer probing.

MPI Definition

The requirement to increase bandwidth in all phases of wire and/or wireless communications combined with an increase in data center speed is driving the communication world away from copper interconnects and towards Silicon Photonics. This evolving technology uses a combination of fiber optics, optical wave guides, integrated optics, optical amplifiers, laser frequency light waves, and photo detectors to carry far more data than traditional copper conductors, to support faster data transfer rates between data communication centers.

There are many new processes and capabilities which require to perform variety of non-conventional on-wafer measurements, such as pure parametric optical: Insertion Loss (IL), polarization dependent loss (PDL) measurements, Optical/Electrical S-Parameters, E-E, E-O, O-E, O-O, optical eye, jitter, transmitter and dispersion eye closure (TDEC), and e.g. on the receiver side bit-error-rate (BER) testing.

Major Requirements

Integration of very accurate single and/or multi-fiber array alignment systems, in combination with common electrical DC and RF signals. Probe arms with optical fiber matching the device operating wavelength and gradient coupler’s angles.

Automated and highly precise Z-sensing for keeping the fibers in constant few micrometer distance to the optical I/Os. High mechanical stability and vibration isolation control in order to minimize e.g. trans-impedance amplifier (TIA) output voltage variations.

MPI Solutions

MPI designed dedicated SiPH Upgrades for silicon photonics on-wafer tests. The systems are designed with a reduced platen to chuck distance which allows shorter overall fiber length for performing repeatable low noise measurements.

Variety of accurate up to 6-axis fiber positioning stages and related software can be easily configured with the MPI SiPH probe systems in order to meet different requirements. Easy upgrade path safes budgets and time, if requirements are changing.

Solutions for just single fiber or multi-fiber-arrays are available, all integrated with automated Z-sensing unit for constant distance of few micrometer to the optical I/O. MPI provides unique safety concept offering of an integrated crash protection to prevent not only collisions of the wafer to the fiber at initial set-up but also of both independent I/O fibers/arms.

Seamless integrated measurement rack accommodates controllers, drivers very close and convenient to operate by not consume additional floor space.

Field Application Engineer

Job Location: San Jose, CA

Job Duties:

  • Assist in developing HW and SW measurement methodologies/solutions for analytical wafer probe solutions with signal applications from DC to millimeter wave frequencies as well as Silicon Photonics (SiPH);
  • Collaborate with customers on their measurement challenges, and provide applications specific product training;
  • Provide pre- and post-sale support to AST, customers, service department, and the sales channel developing HW and SW measurement solutions for analytical wafer probe stations;
  • Define application-specific solutions based on customer-provided device data and facilitate both customer and divisional teams to successful results;
  • Perform product training seminars for customer and sales channels as well as participate in trade shows and technical seminars;
  • Make recommendations regarding product improvement, new products, and quality enhancement;
  • Author, document, publish, and present measurement solutions via Seminars, Applications Notes, Briefs, and White Papers;
  • Prepare, plan, and assist with customer product demonstrations that highlight value-based differentiation of AST product offerings;
  • Develop unique and individual customer presentations designed to professionally position the MPI brand in the North American market and deliver formal presentations to customers.

Job Requirements:

Master’s degree in Electrical Eng., Electronics Eng., Physics, or Photonics; Must possess 6 months of relevant work experience; Travel to customers’ sites in US and headquarters in Taiwan is required.

Send resume to: MPI America, Inc., 2360 Qume Drive, Suite C, San Jose, CA 95131, Attn: Janet Chiang