Nanosecond optical parametric oscillator based On highly-nonlinear dispersion-shifted fiber

We demonstrate a fully fiber-integrated tunable nanosecond optical parametric oscillator based on 50-m highly-nonlinear fiber with tuning range from 1433 nm to 1490 nm and from 1625 nm to 1685 nm by tuning the pump wavelength between 1549 nm and 1555 nm.