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Proceedings Paper

2.5-Gb/s CMOS VCSEL driver circuit with various modulation depths
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Paper Abstract

2.5Gb/s optical transmitter IC for vertical-cavity surface-emitting lasers (VCSELs) was fabricated using the TSMC 2-poly 4-metal process of 0.35μm Si-CMOS. This IC has four channels with 250μm pitch for VCSEL array. The transmitter IC consists of four parts, i.e., buffer, differential amplifier, threshold current controller and modulation current controller. Modifying the threshold current and modulation current, we attained a wide range of the operation current from 1mA to 20mA. The measurement of the IC chip packaged with a 850nm VCSEL array, we obtained a maximum optical output power of 2dBm in 2.5Gb/s operation and an extinction ratio of 5~25dB.

Paper Details

Date Published: 29 August 2002
PDF: 6 pages
Proc. SPIE 4905, Materials and Devices for Optical and Wireless Communications, (29 August 2002); doi: 10.1117/12.481053
Show Author Affiliations
Huk-Yong Kwak, Information and Communications Univ. (South Korea)
Saekyoung Kang, Information and Communications Univ. (South Korea)
Sung-Hwan Hwang, Information and Communications Univ. (South Korea)
Hyo-Hoon Park, Information and Communications Univ. (South Korea)


Published in SPIE Proceedings Vol. 4905:
Materials and Devices for Optical and Wireless Communications
Constance J. Chang-Hasnain; YuXing Xia; Kenichi Iga, Editor(s)

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