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We propose a novel structure for optical assembly that enables high-precision passive alignment assembly process for our flexible printed circuit -- based optical engine. The optical engines are fabricated with less than 7 µm of misalignment between optical devices and polymer waveguides. This high-precision alignment suppresses the optical coupling losses to an average of 2.9 dB for the transmitter...
A compact (22.6 × 9.1 × 0.86 mm), 25-Gb/s, flexible printed circuit based optical transceiver module was developed. The module consists of a 25-μm-thick FPC substrate on which a vertical-cavity surface-emitting laser array, driver, photodiode array, and a transimpedance amplifier are mounted by flip-chip bonding. The polymer waveguide is laminated from the backside of the FPC via microlens-imprinted...
High-bandwidth optical interconnect is a key technology for high-performance computing. This article describes a proposed architecture for next-generation blade servers and optical transceivers required to realize the architecture. It describes the key technologies for high-bandwidth optical transceivers. A new compact optical transceiver with a high bandwidth of 200 Gbps (8 channels ×...
There is a strong demand for optical interconnection technology to overcome bandwidth bottlenecks in high-end server systems. The interconnection speed in present systems is approaching 10 Gb/s, and higher-speed interconnections over 25 Gb/s are being discussed. To achieve such optical interconnections in commercial production, it is necessary to develop lower-cost and higher-speed optical transceiver...
We developed an 8-channel optical transceiver that achieves high density and low cost by adopting cost-effective FPC-OEs on both surfaces of a card-edge module. Clear eye-openings and error-free operation up to 14 Gb/s were obtained.
We have developed cost-effective technologies for optical transceivers with over 10-Gb/s operations in high bandwidth interconnection. These include optical engines on flexible printed circuit and 25Gb/s operation with pre-emphasis overdrive of conventional VCSEL for 10Gb/s.
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