Abstract
State-of-the-art resonant cavity light emitting diodes (RC-LEDs) and vertical cavity surface emitting lasers (VCSELs) for the red wavelength range are presented in the paper. Our red wavelength range RC-LEDs were mainly intended for short-haul communication systems on polymethyl methacrylate plastic optical fiber and were optimized accordingly. They achieve, under different structure and working regime variants, high output power (15 mW), high external efficiency (9.5%), record small-signal modulation bandwidth (f -3dB up to 350 MHz), error free back-to-back transmission rates beyond 622 Mbit/s, adjustable far-field pattern and good POF coupling efficiency with reasonably wide tolerances and without using auxiliary optics. In view of the possible use of graded-index POFs, free-space transmission and other high bandwidth or high spectral purity applications, VCSELs in the red wavelength range were also realized. They have achieved sub-milliamp room-temperature (RT) continuous-wave (CW) lasing for an 8 μm diameter emission window and exhibited an external quantum efficiency of 6.65% for 10 μm devices in RT CW operation. The VCSELs, being only assessment devices, were not optimized, and significant improvement in performance characteristics is predicted for the optimized structures.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
