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- W2325923265 abstract "In light-wave communication systems the information capacity through optical fibers can be increased by wavelength-division multiplexing.1 Distributed-feedback (DFB) laser arrays are compact for such applications. Previously, a 20-DFB laser array with a threshold current of 15-20 mA that operated around 15 µm over a wavelength span of 20 nm2 has been reported. Recently, a 1.5-µm 4-distributed Bragg reflector laser array integrated with a power combiner and an optical amplifier has been used in a 2-Gb/s system experiment.3 In the latter case, degradation in receiver sensitivity owing to the cross talk from the neighboring lasers was observed. For a laser array a low threshold current is most important for minimizing the power consumption on the chip and the cross talk between lasers. Recently, we reported submilliampere-threshold lasers at the 1.5-µm wavelength by the use of biaxial strain and quantum confinement.4" @default.
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- W2325923265 date "1991-01-01" @default.
- W2325923265 modified "2023-10-17" @default.
- W2325923265 title "Low-threshold and high-speed 1.5-µm strained-layer multiple quantum-well four-wavelength distributed-feedback laser arrays" @default.
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- W2325923265 doi "https://doi.org/10.1364/ofc.1991.wb5" @default.
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