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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 2 — Jan. 24, 2005
  • pp: 475–480

40 Gb/s all-optical packet clock recovery with ultrafast lock-in time and low inter-packet guardbands

E. Kehayas, L. Stampoulidis, H. Avramopoulos, Y. Liu, E. Tangdiongga, and H. J. S. Dorren  »View Author Affiliations


Optics Express, Vol. 13, Issue 2, pp. 475-480 (2005)
http://dx.doi.org/10.1364/OPEX.13.000475


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Abstract

We demonstrate a 40 Gb/s self-synchronizing, all-optical packet clock recovery circuit designed for efficient packet-mode traffic. The circuit locks instantaneously and enables sub-nanosecond packet spacing due to the low clock persistence time. A low-Q Fabry-Perot filter is used as a passive resonator tuned to the line-rate that generates a retimed clock-resembling signal. As a reshaping element, an optical power-limiting gate is incorporated to perform bitwise pulse equalization. Using two preamble bits, the clock is captured instantly and persists for the duration of the data packet increased by 16 bits. The performance of the circuit suggests its suitability for future all-optical packet-switched networks with reduced transmission overhead and fine network granularity.

© 2005 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(060.2330) Fiber optics and optical communications : Fiber optics communications
(230.1150) Optical devices : All-optical devices
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Research Papers

History
Original Manuscript: December 6, 2004
Revised Manuscript: January 11, 2005
Published: January 24, 2005

Citation
E. Kehayas, L. Stampoulidis, H. Avramopoulos, Y. Liu, E. Tangdiongga, and H. Dorren, "40 Gb/s all-optical packet clock recovery with ultrafast lock-in time and low inter-packet guardbands," Opt. Express 13, 475-480 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-2-475


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References

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