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Proceedings Paper

850-nm Zn-diffusion vertical-cavity surface-emitting lasers with with oxide-relief structure for high-speed and energy-efficient optical interconnects from very-short to medium (2km) reaches
Author(s): Jin-Wei Shi; Chia-Chien Wei; Jason (Jyehong) Chen; Ying-Jay Yang
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Paper Abstract

High-speed and “green” ~850 nm vertical-cavity surface-emitting lasers (VCSELs) have lately attracted lots of attention due to their suitability for applications in optical interconnects (OIs). To further enhance the speed and its maximum allowable linking distance of VCSELs are two major trends to meet the requirement of OI in next generation data centers. Recently, by use of the advanced 850 nm VCSEL technique, data rate as high as 64 Gbit/sec over 57m and 20 Gbit/sec over 2km MMF transmission have been demonstrated, respectively. Here, we will review our recent work about 850 nm Zn-diffusion VCSELs with oxide-relief apertures to further enhance the above-mentioned performances. By using Zn-diffusion, we can not only reduce the device resistance but also manipulate the number of optical modes to benefit transmission. Combing such device, which has excellent single-mode (SMSR >30 dB) and high-power (~7mW) performance, with advanced modulation format (OFDM), record-high bit-rate-distance-product through MMF (2.3 km×28 Gbit/sec) has been demonstrated. Furthermore, by selective etching away the oxide aperture inside Zn-diffusion VCSEL, significant enhancement of device speed, D-factor, and reliability can be observed. With such unique VCSEL structure, >40 Gbit/sec energy-efficient transmission over 100m MMF under extremely low-driving current density (<10kA/cm2) has been successfully demonstrated.

Paper Details

Date Published: 4 March 2015
PDF: 8 pages
Proc. SPIE 9381, Vertical-Cavity Surface-Emitting Lasers XIX, 93810E (4 March 2015); doi: 10.1117/12.2085061
Show Author Affiliations
Jin-Wei Shi, National Central Univ. (Taiwan)
Chia-Chien Wei, National Sun Yat-Sen Univ. (Taiwan)
Jason (Jyehong) Chen, National Chiao Tung Univ. (Taiwan)
Ying-Jay Yang, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 9381:
Vertical-Cavity Surface-Emitting Lasers XIX
Chun Lei; Kent D. Choquette, Editor(s)

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