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Published on: February 12, 2013

Efficient modulation cancellation using reflective SOAs.

S Ó Dúill1, L Marazzi, P Parolari

  • 1Institute for Photonics and Quantum Electronics of the Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany. sean.oduill@kit.edu

Optics Express
|December 25, 2012
PubMed
Summary
This summary is machine-generated.

Reflective semiconductor optical amplifiers can cancel downstream signals, enabling colorless optical network units. This technology erases signals for efficient upstream transmission, making it ideal for future optical networks.

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Area of Science:

  • Optoelectronics
  • Optical Communications
  • Semiconductor Devices

Background:

  • Colorless optical network units require downstream signal erasure for carrier reuse.
  • High-speed all-optical gain saturation is crucial for efficient signal cancellation.

Purpose of the Study:

  • To demonstrate modulation cancellation and signal inversion in reflective semiconductor optical amplifiers (RSOAs).
  • To evaluate RSOAs as key components for colorless optical network units.

Main Methods:

  • Experimental demonstration of modulation cancellation using RSOAs.
  • Theoretical analysis of gain saturation characteristics.

Main Results:

  • Complete downstream modulation cancellation achieved at microwatt optical power levels.
  • Signal cancellation demonstrated with a 6 dB extinction ratio at 2.5 Gbit/s.

Conclusions:

  • RSOAs exhibit ideal high-speed all-optical gain saturation for signal cancellation.
  • RSOAs are prime candidates for implementing future colorless optical network units.