Configuration of more than N DWDM channels with only one N × N cyclic-AWG-based wavelength routing device

• A device based on only one N x N cyclic AWG is presented.
• The device is easy to extend the DWDM channel configuration.
• Two different structures were built to evaluate the performances.
• The device can configure extended DWDM channels without interfering other channels.
• The device can get a better performance and offer lower cost for dynamic network.

A wavelength routing device based on only one N × N cyclic arrayed waveguide grating (AWG) having easy extended channels configuration is presented in this paper. It is easy to extend the dense wavelength division multiplexing (DWDM) channel configuration through this wavelength routing device. According to the cyclic wavelength of AWG, the wavelength routing devices are easy to configure more than N extended DWDM channels through cascading more proper tunable fiber Bragg gratings (FBGs). With only one 8 × 8 AWG, two different wavelength routing structures were built to evaluate static crosstalk and the bit-error-rate (BER). Three of the 16 inputted DWDM channels were demonstrated to verify that the proposed wavelength routing device, with only one 8 × 8 AWG, could configure extended DWDM channels without interfering with other channels. The results show that the wavelength routing device can produces a better performance and offers a cheaper way to extend the DWDM channel configuration for a dynamic network.