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Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Designing Optical Fibers for WDM Applications Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Out Line • • • • • • • • • Fiber Parameters Required To Design an Optical System Different Fiber Types SMF Standard DCF Highest Negative DCF DCF for Broadband Applications Non Zero Dispersion Shifted Fiber with Large Effective Area (+D NZDSF) Non Zero, Negative Dispersion Fiber for Metropolitan Network (-D NZDSF) Conclusion Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Different Fiber Types Dispersion SMF +D NZDSF X D NZDSF 1550 nm DCF C-Band L-Band Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com FIBER Parameters REQUIRED to Design an Optical Systems Group delay Group velocity dispersion Dispersion slope Effective area Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com (For specific fiber vendor information, please contact Optiwave Corporation) Fiber Parameters Core Radius : 4.07 um R.I. of Core : 1.45204 R.I. Of Cladding : 1.44681 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com MFD : 8.8 um at 1310 nm 10 um at 1550 nm Zero Dispersion Slope : 0.08 ps/km-nm^2 at 1313 nm Zero Dispersion Wavelength : 1313 nm Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 8.8 um < MFD < 9.6 um at 1310 nm MFD : 8.8 um at 1310 nm 10 um at 1550 nm 9.6 um < MFD < 11.2 um at 1550 nm Zero Dispersion Wavelength : 1313 nm Zero Dispersion Slope : 0.08 ps/km-nm^2 1302 nm < Zero Dispersion Wavelength < 1322 nm at 1313 nm •The data of SMF were taken from the public-domain specifications at the vendor's Zero Dispersion Slope < 0.092 ps/km-nm^2 web-site (for vendor information, please contact Optiwave Corporation) Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Simulation Parameters to Design an Optical Systems Using this Fiber Group Delay 4897570 ps / km Dispersion 16.3 ps / km-nm Dispersion Slope 0.069 ps / km-nm^2 ( at 1550 nm ) Effective Area 76 um^2 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Why DCF ? (a) To Compensate Positive Dispersion of SMF (+D) NZDSF (b) To Compensate Negative Dispersion of (-D) NZDSF Dispersion Compensation Equation D+ l − + D− l − = 0 D+ l− D− l− = Dispersion coefficient of (+) dispersion fiber = Length of (+) dispersion fiber = Dispersion coefficient of (-) dispersion fiber = Length of (-) dispersion fiber Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Fiber Parameters Core Radius : 0.7748 um R.I. of Core : 1.47866