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A lens-integrated surface-emitting laser array has been developed for an optical module compliant with Parallel Single-mode 4-lane Multi-Source Agreement (PSM4 MSA) for 100GbE applications. High-efficiency optical coupling to SMF with two-lens configuration and uncooled 25-Gb/s operation over all four-channels were demonstrated.
An 8-wavelength light source for silicon WDM transceiver was developed using an AlGaInAs DFB laser array integrated with tapered-SOA and precise flip-chip bonding technology. The device demonstrated high Si-waveguide-coupled output powers of >+2.3dBm/ch under 8-ch simultaneous operation at 70°C.
The 21-GHz band satellite broadcasting system is studied for transmission channels that can deliver Ultra High Definition TV, 3DTV, etc. We assumed the allocation of two 300-MHz class wideband channels in the 21.4 to 22.0-GHz band and propose an array-fed imaging reflector antenna (array-fed IRA) to supply enough power for a transponder with such a wide band. The array-fed IRA is also an effective...
A four-wavelength Si/III-V hybrid laser array was developed for energy-efficient silicon photonics CWDM transmitter. Under 4-ch simultaneous operation, stable lasing oscillations at four neighboring ring-resonator peaks are obtained with high output powers of >+5dBm/ch.
The development of a high-resolution Positron Emission Tomography (PET) technique with sub-millimeter spatial resolution, which utilizes newly designed reverse-type APD-arrays, is uderway. All the detector blocks are modularized with the overall dimension of each module, including the APD array, LYSO scintillator matrix and Front-End Circuits (FECs), which are only 30 × 30 × 80 mm3. Each APD device...
We developed an SOA gate array switch module with a novel polarization-insensitive built-in array isolator. We achieved excellent optical coupling characteristics that had insertion losses of about 3 dB and high-isolation of over 45 dB in 80 nm wide wavelength ranges.
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