Optical frequency comb is of an important interest for all-optical signal processing and microwave photonics. In this study, a PZT-induced phase shift occurred in a linearly chirped 51-channel FBG is experimentally demonstrated. This induced phase shift is fairly stable and the magnitude of the induced phase shift can be controlled. As an important… (More)
A long-cavity single-longitudinal-mode Brillouin fiber laser is firstly demonstrated by utilizing an unpumped erbium-doped fiber (EDF) loop. The utilized EDF forms a self-induced ultra-narrow grating filter and thus guarantees the SLM operation.