Promblem Arduino Mega whit Timer One

I have a problem with Arduino Mega, using TimerOne.h library
I have try to configure pin 11 as output PWM and set 2000us as period.

I have implemented this simple code:


#include <TimerOne.h>
void setup(){
pinMode(11, OUTPUT);
Timer1.initialize(2000);

}
void loop(){

// initialize timer1, and set a 1/2 second period
Timer1.pwm(11, 512);
}


I can't see the output