1. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. Geometry of the proposed O-PM-RDCF structure: (a) cross-sectional view in transversal mode with ring numbers and (b) illustration of the geometrical dimension with optimized structural parameters. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

2. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. Field distributions of the fundamental modes at 1.55 μm wavelength for the proposed O-PM-RDCF design: (a) X-polarization mode and (b) Y-polarization mode. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

3. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. Chromatic dispersion for negative flattened level over S + C + L + U wavelength bands for the optimum parameters: Λ1=0.66 μm, Λ2/Λ1=0.42 μm, r1/Λ2=0.87 μm, and r2/Λ2=0.90 μm for the proposed O-PM-RDCF. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

4. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. Comparison of chromatic dispersion properties with flatness of the proposed O-PM-RDCF with some recent reported results of the references. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

5. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of dispersion for the function of wavelength at the variation of Λ1 from ±(0.01 to 0.02) μm when all other parameters Λ2, r1, and r2 are kept fixed to optimum level. (Solid lines without and with symbols represent OVP and increment of Λ1. In addition, with symbols, dashed lines represent Λ1). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

6. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of dispersion for the function of wavelength for variation of Λ2 from ±(0.01 to 0.02) μm when Λ1, r1, and r2 stay constant to OVP. (Without symbols solid line explicit OVP. In addition, with symbols, solid, and dashed lines depict increment and decrement of Λ2, respectively). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

7. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of dispersion for the function of wavelength for changing first ring air holes’ diameters r1 when Λ1, Λ2, and r2 remain constant. (Without symbols solid line unfolds OVP. Furthermore, with symbols other solid lines explore increment while dashed line is for decrement of r1). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

8. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of dispersion for the function of wavelength for changing only r2 diameters of air holes’ in the second ring when other parameters Λ1, Λ2, and r1 are fixed at optimum level. (Solid line without and with symbols unfold OVP and increment, respectively, while dashed lines are for decrement of r2). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

9. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of birefringence and nonlinear coefficient for the function of wavelength at OVP to Y-polarized mode. (Dashed line represents nonlinear coefficient and solid line reports birefringent properties). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

10. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of birefringence for the function of wavelength for changing one parameter at a time when all other parameters are kept constant. The changes of Λ1, Λ2, r1, and r2 up to ±0.02 μm for the O-PM-RDCF. (Without symbols solid line for OVP, with symbols solid lines are for increment whereas dashed is for decrement). Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

11. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. The responses of confinement loss for the function of wavelength with optimum parameters for the O-PM-RDCF design. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107

12. Date of download: 6/21/2016 Copyright © 2016 SPIE. All rights reserved. Wavelength dependence of Veff parameter value for single mode test of the proposed O-PM-RDCF. Figure Legend: From: Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber Opt. Eng. 2016;55(4):047107. doi:10.1117/1.OE.55.4.047107