Since communication traffic is still continuing to grow, a large increase in transport capacities in optical fiber networks for long haul, metro and access systems is strongly required. Integrated photonic devices play important roles to improve characteristics in optical transmitters and receivers, which are deployed in those systems. In addition to the telecommunications, very short distance and very large capacity transmission (optical interconnection) is also demanded in data center networks. Integrated photonic devices have also been steadily developed for the optical interconnection networks. It should be noted that technologies of analysis, assembling, measurement, and reliability have been intensively developed to support the progress of those integrated photonic devices.
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