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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 6 — Mar. 17, 2008
  • pp: 3636–3643

Simple approach for bidirectional performance enhancement on WDM-PONs with direct-modulation lasers and RSOAs

Shu-Chuan Lin, San-Liang Lee, and Cheng-Kuan Liu  »View Author Affiliations

Optics Express, Vol. 16, Issue 6, pp. 3636-3643 (2008)

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The extinction ratio (ER) for the downstream and upstream transmission signals needs to be compromised for the WDM-PON systems with directly modulated lasers at the center office and reflective semiconductor optical amplifiers at the user ends. We propose to enhance the performance by adding a FP etalon before the receiver of each optical network unit (ONU). The etalon performs spectral reshaping and then waveform reshaping to the downstream signals. This allows the use of low-ER downstream signals that reduce the intensity fluctuation of RSOA-remodulated upstream signals. This approach can also extend the transmission distance by reducing the transient chirp. Colorless operation can still be obtained since the same etalon can be used to enhance multiple wavelength channels. Experimental results verify considerable performance improvement on WDM-PONs with 10-Gbps and 1.25-Gbps data rates for the downstream and upstream transmission, respectively.

© 2008 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 3, 2007
Revised Manuscript: January 15, 2008
Manuscript Accepted: February 28, 2008
Published: March 4, 2008

Shu-Chuan Lin, San-Liang Lee, and Cheng-Kuan Liu, "Simple approach for bidirectional performance enhancement on WDM-PONs with directmodulation lasers and RSOAs," Opt. Express 16, 3636-3643 (2008)

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