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Multi - channel Spectrum Analyzer for High Capacity Optical Transport Networks

  • Youn, Ji-Wook (Optical Communications Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Hyung-Joo (Optical Communications Department, Electronics and Telecommunications Research Institute) ;
  • Lee, Jong-Hyun (Optical Communications Department, Electronics and Telecommunications Research Institute)
  • Received : 2003.09.08
  • Published : 2003.12.01

Abstract

A simple multi-channel spectrum analyzer using an InGaAs array sensor and a diffraction grating is proposed and developed for high-capacity optical transport networks. With the developed multichannel spectrum analyzer, we could measure signal power, wavelength, and optical signal-to-noise ratio of each channel for multi-channel optical signals with 100 GHz and 50 GHz channel spacing, simultaneously. We could measure each channel power and wavelength with a deviation of less than 0.2 dB and 0.063 nm, respectively. We have obtained optical signal-to-noise ratio with a deviation of less than 1.0 dB compared with conventional optical spectrum analyzer in the wide input power range between -42 dBm and -27 dBm per channel.

Keywords

References

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