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We have fabricated ultra-short cavity membrane distributed Bragg reflector lasers on SiO2/Si substrate for constructing chip-to-chip optical links. To reduce the power consumption of transmitters, reducing cavity length is important. Since the membrane structure enables us to achieve a large optical confinement factor and a surface grating with a large coupling coefficient, we have successfully reduced...
Toward realization of an ultralow-power-consumption semiconductor light source for on-chip optical interconnection, we have been investigating the lateral current injection (LCI) membrane distributed feedback (DFB) laser. This time, we realized membrane DFB laser with 158 nm core thickness and demonstrated room-temperature continuous-wave (CW) operation with a threshold current of 390 μA for the cavity...
Toward realization of an ultralow-power-consumption semiconductor light source for optical interconnection, we have been investigating the lateral current injection (LCI) membrane distributed feedback (DFB) laser. This time, we realized membrane Fabry-Perot (FP) laser with 220 nm core thickness and demonstrated room-temperature continuous-wave (CW) operation with a threshold current of 3.5 mA for...
Uniformly distributed quantum-well structure was introduced to a lateral-current-injection (LCI) laser to realize high internal quantum efficiency operation. As the result, superior light output characteristic was obtained with the internal quantum efficiencies of 70%.
Significant advances in the room-temperature (RT) continuous-wave (CW) output power of both type-l quantum-well (QW) active-layer lasers and interband cascade lasers have been reported within the 3-4-??m wavelength region in 2009. Recent developments on the growth of highly strained QWs and low-defect-density lattice-mismatched materials also demonstrate potential for realizing high-performance mid-infrared...
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