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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 1 — Jan. 14, 2013
  • pp: 533–543

SSII cancellation in an EAM-based OFDM-IMDD transmission system employing a novel dynamic chirp model

Dar-Zu Hsu, Chia-Chien Wei, Hsing-Yu Chen, Yi-Cheng Lu, Cih-Yuan Song, Chih-Chieh Yang, and Jyehong Chen  »View Author Affiliations

Optics Express, Vol. 21, Issue 1, pp. 533-543 (2013)

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We develop a novel subcarrier-to-subcarrier intermixing interference (SSII) cancellation technique to estimate and eliminate SSII. For the first time, the SSII cancellation technique is experimentally demonstrated in an electro-absorption modulator- (EAM-) based intensity-modulation-direct-detection (IMDD) multi-band OFDM transmission system. Since the characteristics of SSII are seriously affected by the chirp parameter, a simple constant chirp model, we found, cannot effectively remove the SSII. Therefore, assuming that the chirp parameter linearly depends on the optical power, a novel dynamic chirp model is developed to obtain better estimation and cancellation of SSII. Compared with 23.6% SSII cancellation by the constant chirp model, our experimental results show that incorporating the dynamic chirp model into the SSII cancellation technique can achieve up to 74.4% SSII cancellation and 2.8-dB sensitivity improvement in a 32.25-Gbps OFDM system over 100-km uncompensated standard single-mode fiber.

© 2013 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 1, 2012
Revised Manuscript: December 14, 2012
Manuscript Accepted: December 21, 2012
Published: January 7, 2013

Dar-Zu Hsu, Chia-Chien Wei, Hsing-Yu Chen, Yi-Cheng Lu, Cih-Yuan Song, Chih-Chieh Yang, and Jyehong Chen, "SSII cancellation in an EAM-based OFDM-IMDD transmission system employing a novel dynamic chirp model," Opt. Express 21, 533-543 (2013)

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