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Can cheaper lasers handle short distances?
VCSELs may serve in more non-photonic applications.
“We have seen the transition from long haul to metro-to-local area networks and then into the data center,” said Suresh Jayaraman, senior director for package development at Amkor Technology. “DFB lasers are ‘better’ — i.e., with narrower linewidth, larger bandwidth, higher optical output power, and they can operate in O and C bands — but they’re also more expensive,” said Jigesh Patel, principal engineer, photonic systems and circuits at Synopsys. The company is combining it with a wafer that acts as an optical interposer, with grating couplers to admit the laser light into waveguides and photodiodes to convert back to the electrical domain.
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