40-Gb/s tandem electroabsorption modulator

Beck Mason, Abdallah Ougazzaden, Charles W. Lentz, Kenneth G. Glogovsky, C. Lewis Reynolds, George J. Przybylek, Ronald E. Leibenguth, Terry L. Kercher, John W. Boardman, Michael T. Rader, J. Michael Geary, Frank S. Walters, Larry J. Peticolas, Joseph M. Freund, S. N.George Chu, Andrei Sirenko, Ronald J. Jurchenko, Mark S. Hybertsen, Leonard J.P. Ketelsen, Greg Raybon

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


In this letter, we have developed a tandem electroabsorption modulator with an integrated semiconductor optical amplifier that is capable of both nonreturn-to-zero and return-to-zero (RZ) data transmission at 40 Gb/s. The tandem modulator consists of a broad-band data encoder and a narrow-band pulse carver. The pulse carver is able to produce 5-ps pulses with more than 20 dB of extinction. The on-chip semiconductor optical amplifier provides up to 8.5 dB of fiber-to-fiber gain and enables the modulator to be operated with zero insertion loss. Devices have been realized with greater than 40-GHz bandwidth, and 13-dB dynamic extinction for a 2.5-V swing. For optimized designs bandwidths of nearly 60 GHz have been realized. Using these devices penalty free RZ data transmission over a 100-km dispersion compensated fiber link has been demonstrated with a received power sensitivity of -29 dBm.

Original languageEnglish (US)
Pages (from-to)27-29
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number1
StatePublished - Jan 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • Electroabsorption modulators
  • Semiconductor optical amplifiers


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