Patent ID: 8660399

Claim:
A linearity measurement system for an optical power meter comprising: an input optical fiber receiving an optical signal from an external optical power source; an optical power splitter having an input connected to the input optical fiber and two outputs, each output connected to an optical fiber, the optical power splitter to split the input optical signal into two branches, one branch on each optical fiber; two variable optical attenuators controlled by the controller, each variable optical attenuator connected between one output of the optical power splitter and the input of one optical switch, each variable optical attenuator to attenuate an optical signal in each branch; two optical switches controlled by a controller, each optical switch having an input connected to one optical fiber from the optical power splitter and an output connected to an optical fiber, each optical switch to block or pass an optical signal in each branch; an optical coupler having two inputs, each input connected to an optical fiber from an optical switch, and an output connected to an output optical fiber, the optical coupler to combine the optical signals in each branch into an output optical signal; an output optical fiber to output the output optical signal to an external optical power meter; the controller for controlling an optical power output from the system to the optical power meter; a display device for displaying a state of the system based on information from the controller; and an input device for commanding the controller to control the optical power output from the system to the optical power meter.