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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 13, Iss. 4 — Dec. 25, 2009
  • pp: 434–438

A 12.5-Gb/s Optical Transmitter Using an Auto-power and -modulation Control

Won-Seok Oh, Kang-Yeob Park, Young-Min Im, and Hwe-Kyung Kim  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 13, Issue 4, pp. 434-438 (2009)


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Abstract

In this paper, a 12.5-Gb/s optical transmitter is implemented using 0.13-μm CMOS technology. The optical transmitter that we constructed compensates temperature effects of VCSEL (Vertical cavity surface emitting laser) using auto-power control (APC) and auto-modulation control (AMC). An external monitoring photodiode (MPD) detects optical power and modulation. The proposed APC and AMC demonstrate 5~20-mA of bias-current control and 5~20-mA of modulation-current control, respectively. To enhance the bandwidth of the optical transmitter, an active feedback amplifier with negative capacitance compensation is exploited. The whole chip consumes only 140.4-mW of DC power at a single 1.8-V supply under the maximum modulation and bias currents, and occupies the area of 1280-μm by 330-μm excluding bonding pads.

© 2009 Optical Society of Korea

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(140.0140) Lasers and laser optics : Lasers and laser optics
(250.3140) Optoelectronics : Integrated optoelectronic circuits
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers

History
Original Manuscript: September 15, 2009
Revised Manuscript: November 3, 2009
Manuscript Accepted: November 18, 2009
Published: December 25, 2009

Citation
Won-Seok Oh, Kang-Yeob Park, Young-Min Im, and Hwe-Kyung Kim, "A 12.5-Gb/s Optical Transmitter Using an Auto-power and -modulation Control," J. Opt. Soc. Korea 13, 434-438 (2009)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-13-4-434


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References

  1. M. S. Lee, B. T. Lee, J. D. Kim, and D. S. Lee, "Fabrication of 2.5 Gbps burst-mode receiver and its full compliance to GPON," J. Opt. Soc. Korea 12, 355-358 (2008) [CrossRef]
  2. H. S. Kang, M. J. Lee, and W. Y. Choi, "6.25-Gb/s optical receiver using a CMOS-compatible Si avalanche photodetector," J. Opt. Soc. Korea 12, 217-220 (2008) [CrossRef]
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