A temperature tunable optical receiver comprising: - a temperature tunable wavelength filter to select a specific received optical wavelength channel; - at least two thermal actuators thermally coupled to the tunable wavelength filter, characterized by comprising at least a first thermal actuator and a second thermal actuator; wherein the first thermal actuator is configured to maintain the temperature of the tunable optical receiver within a first defined temperature range; wherein the second thermal actuator is configured to maintain the temperature of the tunable wavelength filter at a second defined temperature range; wherein the temperature of the tunable wavelength filter, defined by the second thermal actuator, is different from the reference temperature of the tunable optical receiver defined by the first thermal actuator; - at least a temperature sensor, which is configured to issue a sensing signal associated to the temperature of the tunable optical receiver; - at least an optical power sensor, which is configured to issue a sensing signal associated to the temperature of the tunable wavelength filter; - a controller electrically coupled to the first thermal actuator, to the second thermal actuator, to the temperature sensor, and to the optical power sensor, being the controller configured to receive a wavelength channel signal by controlling the temperature of the tunable wavelength filter issuing a first driving signal to the first thermal actuator and a second driving signal to the second thermal actuator, in view of the feedback sensing signals from the optical power sensor, from the temperature sensor, and from a sampling of the power of the second thermal actuator; wherein the controller is configured to maintain constant the sampling of power of the second thermal actuator. - a temperature tunable wavelength filter to select a specific received optical wavelength channel; - at least two thermal actuators thermally coupled to the tunable wavelength filter, characterized by comprising at least a first thermal actuator and a second thermal actuator; wherein the first thermal actuator is configured to maintain the temperature of the tunable optical receiver within a first defined temperature range; wherein the second thermal actuator is configured to maintain the temperature of the tunable wavelength filter at a second defined temperature range; wherein the temperature of the tunable wavelength filter, defined by the second thermal actuator, is different from the reference temperature of the tunable optical receiver defined by the first thermal actuator; - at least a temperature sensor, which is configured to issue a sensing signal associated to the temperature of the tunable optical receiver; - at least an optical power sensor, which is configured to issue a sensing signal associated to the temperature of the tunable wavelength filter; - a controller electrically coupled to the first thermal actuator, to the second thermal actuator, to the temperature sensor, and to the optical power sensor, being the controller configured to receive a wavelength channel signal by controlling the temperature of the tunable wavelength filter issuing a first driving signal to the first thermal actuator and a second driving signal to the second thermal actuator, in view of the feedback sensing signals from the optical power sensor, from the temperature sensor, and from a sampling of the power of the second thermal actuator; wherein the controller is configured to maintain constant the sampling of power of the second thermal actuator.