The utility model relates to a novel multi-wavelength separator and effectively solves the problems that when traditional optical-electric-optical technology is used in optical fiber transmission, the preparation methods are complicated, the cost and loss are high and the transmission, exchange, routing, fault recovery and the like of the information flows cannot be realized simultaneously. According to the adopted technical scheme, the novel multi-wavelength separator comprises an upper glass substrate and a lower glass substrate, which are parallel to each other; the upper surface of the upper glass substrate is plated with a total reflection mirror and a first anti-reflecting film; the lower surface of the upper glass substrate is plated with a first strip-shaped ITO (Indium Tin Oxide) transparent electrode layer and a first parallel orientation layer; the upper surface of the lower glass substrate is plated with a second ITO transparent electrode layer and a second parallel orientation layer; the lower surface of the lower glass substrate is plated with a second anti-reflecting film; a layer of polymer dispersed liquid crystal thin film is arranged between the first parallel orientation layer and the second parallel orientation layer; a power supply is connected onto the first ITO transparent electrode layer and the second ITO transparent electrode layer. According to the novel multi-wavelength separator, the structure is ingenious, the cost is low, the preparation method is simple and the integration is facilitated.