Flexible and lossless baud-rate switching for 4-time slots Nyquist OTDM signals using wavelength selective switch

Abstract

We demonstrate a flexible and lossless baud-rate switching process of the Nyquist OTDM signals using a wavelength selective switch (WSS) equipped with 4 output ports for different time slots. We generate the Nyquist OTDM signals with different baud rates without using any static OTDM devices such as an optical circuit. The WSS-only configuration allows a flexible baud rate switching by changing the filter functions applied to the WSS. The proposed system can successfully switch among 40, 80 and 120-Gboud/s signals with a switching duration of 80 ms.