| Patent application number | Description | Published |
|---|
| 20080317476 | Vehicle-Mounted Optical Communication System and Vehicle-Mounted Optical Transmitter - A vehicle-mounted optical communication system, which uses an optical signal to perform data transmission, comprises a first optical transmitter and an optical receiver. The first optical transmitter, which is mounted on a vehicle, has a multiple quantum well structure, in which an active layer has a quantum well layer of In | 12-25-2008 |
| 20090028201 | OPTICAL COMMUNICATION SYSTEM AND OPTICAL TRANSMITTER - An optical communication system for performing data transmission with optical signals comprises a first optical transmitter and a first optical receiver. The first optical transmitter has a first surface-emitting laser including an active layer of a multiple quantum well structure having a quantum well layer of In | 01-29-2009 |
| 20090080488 | SURFACE EMITTING LASER - A surface emitting laser including a semiconductor substrate, a semiconductor substrate, a first reflector formed on the semiconductor substrate, an active layer formed on the first reflector, a tunnel junction layer formed above a part of the active layer, a semiconductor spacer layer which covers the tunnel junction layer, a second reflector formed on the semiconductor spacer layer in a region above the tunnel junction layer, a first electrode formed in the periphery of the second reflector on the semiconductor spacer layer, and a second electrode electrically connected to a layer lower than the active layer, wherein a layer thickness of the semiconductor spacer layer in the region directly above the tunnel junction layer is thinner than the layer thickness of the semiconductor spacer layer in the region directly below the first electrode. | 03-26-2009 |
| 20090196317 | LIGHT EMITTING DEVICE - It is enabled to provide that a light emitting device have an electron blocking layer ( | 08-06-2009 |
| 20100020835 | SURFACE EMITTING LASER - A surface emitting laser is provided with a first multilayer Bragg reflecting mirror including a first layer, a second multilayer Bragg reflecting mirror including a second layer, and an optical resonator unit that is held between these multilayer Bragg reflecting mirrors and includes an active layer. Further, the optical resonator unit contacts with the first layer and second layer respectively. The effective refraction index n | 01-28-2010 |
| 20100034233 | SURFACE-EMISSION TYPE SEMICONDUCTOR LASER - The present invention provides a surface-emission type semiconductor laser wherein an effective length of a cavity is reduced, thereby enabling to realize a higher-speed direct modulation. In the surface-emission type semiconductor laser according to the present invention, when supposing the optical path length (L) of a resonator part relative to a lasing wavelength λ | 02-11-2010 |
