| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1538005 | Optics Communications | 2011 | 4 Pages |
Coupling properties of two gain-guided, index-antiguided (GG + IAG) fibers, or GG + IAG fibers and index-guided (IG) fibers, were investigated by the further general coupled-mode theory. The theory can explain any situation of two fiber coupling. The interesting results were obtained by the numerical computation method. For two GG + IAG fiber coupling, total power was decreased as rising real-valued refractive-index difference (real part of refractive-index difference between core and cladding, RVRID), while the power of one GG + IAG fiber was damped oscillations with increased core separation. In the GG + IAG fiber and IG fiber coupler, the variation of the RVRID could change coupling characteristics. These results are different from two IG fibers coupling, and the general coupled-mode theory may provide meaningful references for new concepts of directional coupler and pumping technology of GG + IAG fiber.
Research Highlight►Suggesting the theory that can explain any situation of two fiber coupling. ►Some interesting results have been obtained in GG+IAG fiber and IG fiber coupler. ►Providing meaningful references for new concepts of directional coupler. ►Providing meaningful references for new pumping technology of GG+IAG fiber.
