Ultra-fast optical spectrum analyzer for DWDM applications
01 February 2004
Dense wavelength division multiplexing optical net-works use tunable devices such as distributed Bragg reflector laser diodes. These optical sources. require a precise wavelength calibration according to the ITU grid, even with aged components. Some specific optical spectrum analyzers are commercially available. Unfortunately, measurements using those systems are generally relatively slow. We present and discuss in this paper a fast spectral measurement system that can easily be implemented in a laser diode package.