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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 18, Iss. 8 — Aug. 1, 2000
  • pp: 1069–

Transmission Performance of Chirp-Controlled Signal by Using Semiconductor Optical Amplifier

Toshio Watanabe, Norio Sakaida, Hiroshi Yasaka, Fumiyoshi Kano, and Masafumi Koga

Journal of Lightwave Technology, Vol. 18, Issue 8, pp. 1069- (2000)


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Abstract

We examine the fiber transmission performance of the optical signal whose chirp is controlled by utilizing phase modulation in semiconductor optical amplifier (SOA) with both simulations and experiments. This chirp control technique converts a positive chirp created by electroabsorption (EA) modulator into negative chirp, which reduces the waveform degradation due to the chromatic dispersion in transmission over standard single-mode fiber (SMF). It also provides an optical gain that is sufficient to compensate the insertion loss of the EA modulator. We investigate how the chirp control is affected by the input power to the SOA and the carrier lifetime of the SOA. As the SOA input power increases, the negative chirp becomes large, while the waveform is largely distorted due to gain saturation. However, the waveform distortion at high SOA input powers can be shaped by using a frequency discriminator. The acceleration of the carrier lifetime also reduces the waveform distortion due to gain saturation. We demonstrate that the chirp control technique is effective even for a high bit rate optical signal up to 10 Gb/s, when the carrier lifetime is expedited by optical pumping.

[IEEE ]

Citation
Toshio Watanabe, Norio Sakaida, Hiroshi Yasaka, Fumiyoshi Kano, and Masafumi Koga, "Transmission Performance of Chirp-Controlled Signal by Using Semiconductor Optical Amplifier," J. Lightwave Technol. 18, 1069- (2000)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-18-8-1069

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