Since its establishment in 2000, Optowell has only been walking through VCSEL’s technology development until now producing semiconductor devices based on outstanding technology as global leader in VCSEL market. In addition, Optowell is only VCSEL manufacturer in Korea that competes proudly in VCSEL market monopolized by several companies around the world and contribute greatly to optic industry.
Moreover, We have been supplying III-V compound Epi wafer, Chip, Package and Etc. to global customers for the past 20 years with a wide range of the products based on differentiated process technology and vertically integrated production system. Especially in the high-speed data communication and high sensitivity optical sensor market, we are exporting the products to more than 30 countries including Europe, USA, China and Japan.
Optowell, which considers customer value as top priority, registers many patents and receives recognition for its technology through steady technology development. Through constant technological innovation, quality improvement, and management innovation, we will repay customer’s support and become a global leader in optical sensors, optical connectors, and medical equipment, and contribute greatly to the advancement of our region and national industries.
VCSEL
VCSEL(Vertical-Cavity Surface-Emitting Laser), an element changing electric signals to optical signals, is a micro semiconductor laser that makes laser beams come out on wafer surface using compound semiconductors.
Unlike an edge-emitting LD (laser diode), a VCSEL emits circular laser beams vertically from a substrate surface, so it can be easily connected with a photodetector or an optical fiber. As 2-dimensional arrays can be easily performed and executed, parallel signals can be managed and processed. With the downsizing of elements, large scale integration can be achieved. The VCSEL reduces power consumption and it is heat-resistant. Its manufacturing process is simple.
The VCSEL is applied to digital media, such as laser printers, laser mouse devices, DVIs, HDMIs, high-speed PCBs and home networks. Regarding cars, it is applied for multi-media networks and safety sensors. Regarding IT, it is applied to Gigabit Ethernet, SAN, SONET and VSR. Regarding sensors, it is applied to encoders and gas sensors. Regarding medical and bio areas, it is applied to blood glucose meters and lasers for skin care. Efforts have been made to develop new applications.Semiconductor VCSEL
PIN PD
Unlike the VCSEL, PD (Photo Diode) is a compound semiconductor element that changes optical signals to electric signals. The compound semiconductor-based PD has the ability to receive light as a high-speed communication detector and a highly sensitive sensor because of its unique characteristics that silicone doesn't possess.
A PIN PD has almost the same applications as a VCSEL and it is applied to areas that include digital media, cars, IT, sensors, and medicine and bio. Efforts have been made to develop new applications.Semiconductor PIN PD
RCLED
RCLED (Resonant-Cavity Light-Emitting Diode) is a light-emitting diode using compound semiconductors. VCSELs, LDs and LEDs are 650nm-band light sources for optical communication used for POF systems. All of them are pn-junction semiconductors, but semiconductor lasers are stimulated emissions and LEDs are spontaneous emissions. Therefore, the wavelength and status of lights are different.
In comparison with semiconductor lasers, LEDs have good output power linearity, create little noise, have long durability and are highly reliable and are cheap, but they are poor in terms of generating power, the speed of response and coupling efficiency. RCLEDs, however, have resolved the flaws of semiconductor lasers and light-emitting diodes are gaining in popularity. Surface-emitting RCLEDs are excellent in terms of coupling efficiency, the speed of response, temperature characteristics and durability.
RCLEDs are applied to control sensors of cars, car audios, automatic navigation systems, military vehicles, combat planes, airplanes and ships.
