Exfo FastReporter Data Post-Processing Software Manuel d'utilisateur Page 226
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Noté. / 5. Basé sur avis des utilisateurs
Measuring Chromatic Dispersion: Theory
220 FastReporter
Using Data Fits to Obtain Dispersion
Using Data Fits to Obtain Dispersion
This section gives you details about the way EXFO uses the data fits to
obtain dispersion. Once group delays are computed, equations are fitted in
order to obtain dispersion, dispersion slope and zero-dispersion
wavelengths. The dispersion curve of typical singlemode fibers follows
certain equations used to interpolate zero-dispersion wavelength and
slope. The following table graph shows the equations applied to
singlemode fibers in specific wavelength ranges.
Fiber Type
and Wavelength Range
Expression for D
G.652 NDSF
G.653 DSF
1500 nm-1600 nm
G.655 NZDSF
up to 1560 nm
G.655 NZDSF
1530 nm-1565 nm (C Band)
1565 nm-1625 nm (L Band)
G.653 DSF
1200 nm λ 1600 nm≤≤
τλ() ABλ
2
Cλ
2–
++=
D λ() 2Bλ Cλ
3–
–()=
τλ() ABλ
2
Cλ++=
D λ() 2Bλ C+=
D λ()
D1560()D 1530()–
30
-------------------------------------------------
°
λ 1560–()⋅
⎩⎭
⎨⎬
⎧⎫
D 1560()+=
D λ()
D1565()D 1530()–
35
-------------------------------------------------
°
λ 1565–()⋅
⎩⎭
⎨⎬
⎧⎫
D1565()+=
D λ()
D 1625()D 1565()–
60
-------------------------------------------------
°
λ 1625–()⋅
⎩⎭
⎨⎬
⎧⎫
D 1625()+=
1200 nm λ 1600 nm≤≤
τλ() ABλ Cλλ()ln++=
D λ() BCC λ()ln++=
- FastReporter 1
- Contents 3
- 1 Introducing FastReporter 7
- 2 Getting Started with 9
- 4 FastReporter 10
- Starting FastReporter 11
- Registering FastReporter 11
- IMPORTANT 12
- 8 FastReporter 14
- Software Customization Wizard 15
- 10 FastReporter 16
- ³ Broadband 16
- Customizing the Main Window 18
- 14 FastReporter 20
- Working with Two Monitors 22
- Changing FastReporter Options 23
- 18 FastReporter 24
- 20 FastReporter 26
- Exiting FastReporter 28
- 3 Working with Projects 29
- 24 FastReporter 30
- 26 FastReporter 32
- Opening a Project 33
- Saving a Project 34
- Changing the Distance Units 36
- Creating Project Templates 37
- 32 FastReporter 38
- Renaming Project Templates 40
- Removing Project Templates 40
- 4Working with OTDR Files 41
- Changing OTDR Settings 42
- Working with OTDR Files 43
- 38 FastReporter 44
- Changing Pass/Fail Thresholds 45
- Setting Macrobend Tolerances 46
- 44 FastReporter 50
- 46 FastReporter 52
- 48 FastReporter 54
- 50 FastReporter 56
- 52 FastReporter 58
- Edit Option Description 58
- Editing OTDR Event Properties 59
- OTDR Graphic Display Options 62
- OTDR Zoom Options 64
- 60 FastReporter 66
- Item Description 66
- Template 68
- 66 FastReporter 72
- Matching Files Manually 73
- 68 FastReporter 74
- 70 FastReporter 76
- Item To be valid 76
- 72 FastReporter 78
- Batch Processing 79
- 5Working with OLTS Files 81
- Changing OLTS Settings 82
- Working with OLTS Files 84
- 6Working with CD Files 85
- Changing CD Settings 86
- 82 FastReporter 88
- Changing CD Fiber Type 90
- Changing Analysis Range 92
- Changing the Fiber Length 93
- Toggling Between Curve Types 94
- 7 Working with PMD Files 95
- Changing PMD Settings 96
- Changing Fiber Length 98
- Working with PMD Files 100
- 8 Working with OPM/PPM 101
- Measurements 101
- 96 FastReporter 102
- Accepted File Formats 102
- Power Meter Results 103
- 98 FastReporter 104
- Changing Correction Factor 105
- 9 Working with FIP files 107
- 102 FastReporter 108
- Matching Files 108
- 104 FastReporter 110
- View Option Description 110
- 106 FastReporter 112
- FIP Graphic Display Options 113
- 108 FastReporter 114
- 10 Working with iOLM files 115
- 110 FastReporter 116
- 112 FastReporter 118
- Link Definition 120
- 116 FastReporter 122
- 118 FastReporter 124
- Managing Element 125
- 120 FastReporter 126
- Working with iOLM files 128
- Type of Elements 129
- Group Element 130
- Adding Element 131
- 126 FastReporter 132
- 128 FastReporter 134
- Modifying Element Types 136
- Deleting Element 137
- Link View 138
- Link Overview 139
- Link Composition 140
- OTDR Representation 142
- Analyzing Measurements 143
- Managing Configuration Files 144
- 140 FastReporter 146
- Diagnostics 147
- 11 Viewing and Editing 149
- Identification Information 150
- 146 FastReporter 152
- Information 154
- Saving Measurement Files 156
- Printing Reports 157
- Generating Reports 158
- PDF or html file 160
- 7. Click OK 160
- Previewing Reports 161
- 156 FastReporter 162
- 5. Click OK 165
- Using the Clipboard 166
- 162 FastReporter 168
- 13 Exporting Data for 171
- Postprocessing 171
- 166 FastReporter 172
- 14 Using FastReporter Tools 175
- 170 FastReporter 176
- 172 FastReporter 178
- 174 FastReporter 180
- 176 FastReporter 182
- Using FastReporter Tools 184
- 15 FastReporter Examples 187
- 182 FastReporter 188
- Creating a Project 188
- FastReporter Examples 189
- 10. Click Save 189
- 184 FastReporter 190
- 190 FastReporter 196
- 192 FastReporter 198
- File Type Application 201
- Creating a Project Template 202
- 198 FastReporter 204
- 16 Troubleshooting 205
- 17 Licence Agreement and 207
- Warranty 207
- 202 FastReporter 208
- 204 FastReporter 210
- A Description of OTDR Event 211
- Span Start 212
- Span End 212
- Short Fibers 212
- Continuous Fiber 213
- End of Analysis 214
- Non-Reflective Event 215
- Positive Event 216
- Launch Level 217
- Merged Reflective Event 218
- Fiber Section 220
- Reflective Event 223
- B Measuring Chromatic 225
- Dispersion: Theory 225
- 220 FastReporter 226
- Fiber Type 226
- Expression for D 226
- 222 FastReporter 228
- >> 1) 230
- DReport Samples 233
- 6LJQDWXUH 'DWH 234
- 3DJHRI 234
- Report Samples 235
- CD and PMD 237
- PMD Average per Fiber 240
- OTDR Cable 241
- 242
- 242
- 242
- Duplicated Measurement 243
- PPM Service Activation 244
- 3DJHRI 245
- OTDR Cable Event Loss (20) 246
- Fiber Inspection Probe 247
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