Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Year | Description |
| 2001 | Invention patented by Masaki Funabashi and Satoshi Arakawa on November 14th, 2001. Abstract: A distributed feedback (DFB) semiconductor laser device has a multiple-quantum-well (MQW) structure and a diffraction grating formed in the MQW structure. The diffraction grating includes a grating structure formed in QW layers and a barrier layer of the MQW structure and an embedded layer embedded in the grating structure. One of the QW layers and the barrier layers has an etching rate lower than the etching rate of the other layers of the MQW structure and functions as an etching stop layer during etching of the MQW structure for forming the diffraction grating. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
