Slide 1

PMD Measurement of Single Mode Fiber by the Wavelength Scanning Method 1. 2.Setup & Measurement Data 3.Analysis 4.Further work Outline Slide 2 Object 1.Wavelength Scanning Method PMD 2. PMD / 3.PMD Mechanism Theoretical Model Slide 3 1. Process 2. 3. 4.SETUP 5. MEASUREMENT 6. 7. Slide 4 1. Collecting the fundamental Data 1. Polarization, Dispersion in a Single Mode Optical Fiber Research latter / Book / Data 2. Device Manuals, Remote Control & Measurement Sequence 3. Books Mathematical jobs / Understanding the Standard Slide 5 2.1.Thinking about Measurement Method 1. FOTP-113 Wavelength Scanning Method - Fixed Analyzer Method - Poincare Sphere Method 2. Jones Matrix Eigen Analysis 3. Time Domain PMD Measurement Method - Interferometric Method - Modulation Phase-Shift Method - Pulsed-Delay Method Slide 6 2.2. Diagram of the Wavelength Scanning Method Polarization Controller Slide 7 3. Setup Space Fiber End Lens Polarizer Object Lens Fiber SC to DUT DUT End Polarizer PDA400 Input Slide 8 4. Measurement Fixed Analyzer Method 2 x 25km SMF Spool Vertical : Peak Points 1490/1502/1515/1523/1531/1556 Mean DGD : 0.241 ps PMD => 0.034 ps/km Horizontal : Peak Points 1493/1508/1519/1528/1539/1561 Mean DGD : 0.235 ps PMD => 0.033 ps/km Slide 9 4.1 Fitting Using the Lorentz Multi Peak Fitting in Origin7 P(h)/{P(h)+P(v)} : Horizontal P(v)/{P(h)+P(v)} : Vertical PMD Coefficient => 0.032 ps/km Calculated by = kE first last /2( last - first )c Slide 10 4.3 100km Spool by Fixed Analyzer Method 100km Mean DGD : 0.28 ps PMD : 0.028 ps/km -Mean DGD - DGD Slide 11 4.4 Polarization Controller & Polarimeter 100km : 8 1488/1501/1513/1525/153 5/1557/1576/1585 Mean DGD : 0.23 ps PMD : 0.023 ps/km 50km : 6 1492/1513/1528/1542/155 8/1576 Mean DGD : 0.19 ps PMD : 0.027 ps/km Slide 12 4.5. Power DOP Fiber spool about 20 km 1570 nm DOP DOP DGD Slide 13 5. : Measured data -> Calculation PMD 1. Fixed Analyzer Method (FOTP-113) Calculation Formula Mean DGD : = kE first last /2( last - first )c PMD : Mean DGD / Sqrt Fiber Length 2. Poincare Sphere Method is equal to Fixed Analyzer Method S0 = + S1 = - s1 = S1/S0 , 1 + s1 = 2 x / { + } = 2 x P(h)/{P(h)+P(v)} 3. Stokes Parameter Evolution (Jones Matrix Eigenvalue Analysis) FOTP - 122 { TIA/EIA - 455- 122 A} Slide 14 5.0.1. Stokes Parameter Evolution 1st order PMDHigher order PMD PMD 1 PMD 3 . Slide 15 6. Conclusio & Further Jobs 1. 100km : 8 Mean DGD : 0.23 ps PMD : 0.023 ps/km 50km : 6 Mean DGD : 0.19 ps PMD : 0.027 ps/km 2. Stokes Parameter PMD 3. DGD 4. PMD , 5. PMD Emulator / Compensator Slide 16 5.1. 100km Fiber Spool 2 x 25km SMF Spool Vertical : Peak Points 1490/1502/1515/1523/1531/1556 Mean DGD : 0.241 ps PMD => 0.034 ps/km Horizontal : Peak Points 1493/1508/1519/1528/1539/1561 Mean DGD : 0.235 ps PMD => 0.033 ps/km 100km Mean DGD : 0.28 ps PMD : 0.028 ps/km 100km : 8 1488/1501/1513/1525/153 5/1557/1576/1585 Mean DGD : 0.23 ps PMD : 0.023 ps/km 50km : 6 1492/1513/1528/1542/155 8/1576 Mean DGD : 0.19 ps PMD : 0.027 ps/km Slide 17 Random Polarization Mode Coupling mean sq. dev.