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We present an analysis of pulse-amplitude modulation 4 (PAM) based multimode fiber (MMF) links using VCSELs at 850 and 1050 nm across a wide range of fiber profiles with effective modal bandwidth spanning from 2 to 10 GHz·km. We demonstrate speeds >51.56 Gbit/s over a set of standard OM3 and OM4 fibers with bit error rate (BER) <10−12 using pseudo random bit sequence 7, up to reaches of 150...
The demand for ultra-high speed transceivers continues to rise exponentially due to the insatiable demand for high-throughput interconnect. Standards between 25 and 32Gb/s are rapidly approaching maturity, and available products and IPs at these rates are iterating to push down power while extending channel-loss recovery limits. Predictably, specifications are now in early stages for extending per-lane...
We report a directly modulated 850nm VCSEL-based Optical link operating at 55Gb/s. This is the highest modulation rate for VCSEL-based link of any wavelength.
Optical communication systems based on dense wavelength division multiplexing (DWDM) would benefit from the ability to adjust the operating wavelength of a laser transmitter. Previous attempts, including thermal adjustment, etalon based wavelength locking, and various types of optical frequency and phase locked loops such as the Pound-Drever-Hall technique suffer from weaknesses including sensitivity...
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