A tunable dual-wavelength fiber Bragg grating laser using an external-injected DFB laser

Abstract

A tunable dual-wavelength fiber Bragg grating (FBG) laser based on a distributed feedback (DFB) laser injection is proposed and experimentally demonstrated. The wavelength spacing can be tuned by adjusting the operation temperature of the DFB laser. When the DFB works at 25 °C, a dual-wavelength simultaneous oscillation at 1 549.67 nm and 1 553.44 nm with wavelength spacing of 3.77 nm is achieved. Our experimental results demonstrate the new concept of dual-wavelength lasing with a DFB laser injection and the technical feasibility.

Keywords

Pump Power / Fiber Bragg Grating / Optoelectronic Letter / Wavelength Spacing / IEEE Photonic Technology Letter

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