Demonstration of multi-wavelength tunable fiber lasers based on a digital micromirror device processor.

Based on a digital micromirror device (DMD) processor as the multi-wavelength narrow-band tunable filter, we demonstrate a multi-port tunable fiber laser through experiments. The key property of this laser is that any lasing wavelength channel from any arbitrary output port can be switched independently over the whole C-band, which is only driven by single DMD chip flexibly. All outputs display an excellent tuning capacity and high consistency in the whole C-band with a 0.

Diffraction of digital micromirror device gratings and its effect on properties of tunable fiber lasers.

A digital micromirror device (DMD) is a kind of widely used spatial light modulator. We apply DMD as wavelength selector in tunable fiber lasers. Based on the two-dimensional diffraction theory, the diffraction of DMD and its effect on properties of fiber laser parameters are analyzed in detail.

[Spectrum analysis of modulated polarized light in phase retardation measurement].

The fundamental principle of light modulation is presented. The characteristic of light modulator is discussed both in time and frequency domains. Fourier transform spectrum of the intensity shows that the intensity distribution of outgoing light is the superposition of a series of Dirac functions in the frequency domain.