Institute of Electrical and Electronics Engineers Inc.;IEEE
摘要:
摘要： We demonstrate the performance of a novel cyan light-emitting diode (LED) on a patterned sapphire (PS) substrate as a light source for plastic optical fiber (POF) communications with the central wavelength at 500 nm. To further enhance the external quantum efficiency (EQE) and output power of this miniaturized high-speed LED, a LED with a PS substrate is adopted. Furthermore, by greatly reducing the number of active \hbox{In}_{\rm x}\hbox{Ga}_{1 - {\rm x}}\hbox{N/GaN} multiple quantum wells (MQWs) to four and minimizing the device active area, we can achieve a record-high electrical-to-optical (E-O) bandwidth (as high as 400 MHz) among all the reported high-speed visible LEDs under a very small dc bias current (40 mA). The fiber coupling efficiency has been improved in 4 dB using lens with a 500- \mu \hbox{m} diameter mounted on the LED chip. Thus, the maximum fiber-coupled power was - 2.67 dBm at the bias current of 40 mA. The 1.07-Gb/s data transmissions over a 50-m SI-POF fiber have been successfully demonstrated using this device at the bias current of 40 mA. 其他題名： JPHOT 出版者： IEEE 出版日期： 2012-10-01 出處： IEEE photonics journal, 2012-10, Vol.4 (5), p.1520-1529 資源來源： IEEE Xplore 識別號： ISSN: 1943-0655 識別號： ISSN: 1943-0647 識別號： EISSN: 1943-0647 識別號： DOI: 10.1109/JPHOT.2012.2210867 識別號： CODEN: PJHOC3
