Can OTN operates without DWDM

Yes, Optical Transport Networks (OTN) can operate without Dense Wavelength Division Multiplexing (DWDM). OTN primarily focuses on the transport of digital signals over optical fiber, providing functionalities like error correction and data encapsulation. While DWDM enhances capacity by allowing multiple wavelengths to be sent simultaneously over a single fiber, OTN can still function using other transmission methods, such as Time Division Multiplexing (TDM) or at lower bandwidths without wavelength multiplexing. However, the absence of DWDM may limit the overall capacity and efficiency of the optical network.