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Designing of Raman lasers with Bragg mirrors

In this paper, a method of designing a Raman laser structures with Bragg mirrors used to coupling pump signal, forming a resonator and lead-out laser signal outside is presented. The Raman laser is SOI waveguide structure (such as "rib," i.e. ridge waveguide) with built-in reverse biased p-i-n diode, wherein the optical gain is generated by stimulated Raman effect in the waveguide. Our way of designing is based on the effective refractive index method. Design of Raman laser with Bragg mirrors consists of two main stages: the first step is the choice of the optimum size and shape of the rib waveguide; the second step is the selection of Bragg gratings parameters. Our method of designing such Raman laser structures is a design tool, which uses analytical dependences and allows specifying optimal geometric parameters of one mode laser.