This is the most widely used fiber for constructing optical devices. We will demonstrate the design for SMF-28, a commercially available fiber from Corning.

We will also compare the results of 3D mode solver with Finite Difference method of OptiFiber from Optiwave Corporation.

Fiber parameters of SMF-28

Core radius: 4.07μm

Refractive index of core: 1.45205

Refractive index of cladding: 1.44681

Wavelength: 1.3 μm

BPM - Figure 1 Refractive index profile of SMF-28 fiber

Figure 1:   Refractive index profile of SMF-28 fiber

Defining the materials

To define the materials for the SMF-28 fiber, perform the following procedure.

Step Action
1 In the Profile Designer, create the following dielectric materials:

Name: core

2D Isotropic tab

Refractive index (Re): 1.45204

3D Isotropic tab

Refractive index (Re): 1.45204

Name: cladding

2D Isotropic tab

Refractive index (Re): 1.44681

3D Isotropic tab

Refractive index (Re): 1.44681