GaN-based miniaturized cyan light-emitting diodes on a patterned sapphire substrate with improved fiber coupling for very high-speed plastic optical fiber communication

Jhih Min Wun, Che Wei Lin, Wei Chen, J. K. Sheu, Ching Liang Lin, Yun Li Li, John E. Bowers, Jin Wei Shi, Juri Vinogradov, Roman Kruglov, Olaf Ziemann

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

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 In xGa 1-xN/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-μm 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.

Original languageEnglish
Article number6255750
Pages (from-to)1520-1529
Number of pages10
JournalIEEE Photonics Journal
Volume4
Issue number5
DOIs
Publication statusPublished - 2012 Aug 30

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'GaN-based miniaturized cyan light-emitting diodes on a patterned sapphire substrate with improved fiber coupling for very high-speed plastic optical fiber communication'. Together they form a unique fingerprint.

  • Cite this

    Wun, J. M., Lin, C. W., Chen, W., Sheu, J. K., Lin, C. L., Li, Y. L., Bowers, J. E., Shi, J. W., Vinogradov, J., Kruglov, R., & Ziemann, O. (2012). GaN-based miniaturized cyan light-emitting diodes on a patterned sapphire substrate with improved fiber coupling for very high-speed plastic optical fiber communication. IEEE Photonics Journal, 4(5), 1520-1529. [6255750]. https://doi.org/10.1109/JPHOT.2012.2210867