Agilent Technologies 86038B User manual

Agilent 86038B
Photonic Dispersion and Loss Analyzer User’s
Guide

Notices
© Agilent Technologies, Inc. 2001 - 2006
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Technologies, Inc. as governed by United
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Agilent Technologies, Deutschland GmbH
Herrenberger Straße 130
71034 Böblingen, Germany.
Manual Part Number
86038-90B03
Edition
Second edition, July 2006
First edition, September 2005
Subject Matter
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errors contained herein or for incidental or
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3
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4

Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition 5
Contents
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Key benefits are: . . . . . . . . . . . . . . . . . . . . . . . . . 22
General Safety Considerations. . . . . . . . . . . . . . . . . . . . . . . 24
Safety Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Instrument Markings. . . . . . . . . . . . . . . . . . . . . . 24
Laser Safety Considerations . . . . . . . . . . . . . . . 26
Environmental Information. . . . . . . . . . . . . . . . . 27
Setting Up the Photonic Dispersion and Loss Analyzer. . 28
Agilent 86038B Front and Rear Panels. . . . . . . 32
Performance Verification . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Things to Consider. . . . . . . . . . . . . . . . . . . . . . . . 35
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Navigating the Front Panel Functions. . . . . . . . . . . . . . . . . 44
Defining Traces . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Quick Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Prepare the Normalization . . . . . . . . . . . . . . . . . 47
Quick Setup Process . . . . . . . . . . . . . . . . . . . . . . 47
Measurement Process . . . . . . . . . . . . . . . . . . . . 48
Measurement Concepts . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Understanding the Attributes Being Measured . . . . . . . . 51
Gain/Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

6Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
Group Delay/Chromatic Dispersion/Optical
Phase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Polarization Mode Dispersion/Differential
Group Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Polarization Dependent Loss (PDL) . . . . . . . . . 56
Fiber length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Description of the 86038B . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Measurement Method (MPS) . . . . . . . . . . . . . . . . . . . . . . . 59
Choosing Setup Parameters. . . . . . . . . . . . . . . . . . . . . . . . . 61
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Relationship of setup parameters to
measurement noise. . . . . . . . . . . . . . . . . . . . . . . 62
Relationship of setup parameters to phase
wrapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Maximum RF Modulation Frequency (MHZ) . . 64
Relationship of setup parameters to aliasing . 65
Relationship of setup parameters to resolution .
65
Relationship of setup parameters to imaging . 66
Relationship of setup parameters to DGD and
PDL accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Relationship of setup parameters to ripple
amplitude accuracy . . . . . . . . . . . . . . . . . . . . . . . 68
Control of resolution and noise . . . . . . . . . . . . . 70
Selecting setup conditions for a new type of
narrowband device . . . . . . . . . . . . . . . . . . . . . . . 71
Suggested reading: . . . . . . . . . . . . . . . . . . . . . . . 72
Multiple Port Configurations . . . . . . . . . . . . . . . . . . . . . . . . 73
Normalization and Measurement . . . . . . . . . . . . . . . . . . . . 74
Optical Modulator Bias Adjustment . . . . . . . . . 74
Input Polarizer Adjustment . . . . . . . . . . . . . . . . 75
Phase Dynamic Accuracy. . . . . . . . . . . . . . . . . . 75

Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition 7
Length Normalization . . . . . . . . . . . . . . . . . . . . . 76
Wavelength Accuracy Correction . . . . . . . . . . . 76
Swept and Stepped Measurement Modes. . . . . . . . . . . . . 77
Making Measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Quick Setup Measurement Process . . . . . . . . . . . . . . . . . . 81
Set up the Normalization . . . . . . . . . . . . . . . . . . 81
Quick Setup Process . . . . . . . . . . . . . . . . . . . . . . 81
Measurement Process . . . . . . . . . . . . . . . . . . . . 81
Flexible Measurement Process . . . . . . . . . . . . . . . . . . . . . . 82
Prepare for Normalization Measurement . . . . 82
Setup and Normalization Process. . . . . . . . . . . 82
Measurement Process . . . . . . . . . . . . . . . . . . . . 82
Setup Parameters and What They Do. . . . . . . . . . . . . . . . . 83
Wavelength range . . . . . . . . . . . . . . . . . . . . . . . . 83
Wavelength increment . . . . . . . . . . . . . . . . . . . . 83
Modulation frequency. . . . . . . . . . . . . . . . . . . . . 83
Samples/Point . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
IF Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
TLS Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Choosing Setup Parameters for Your Device . . . . . . . . . . . 85
Transmission Fiber (All Types). . . . . . . . . . . . . . 85
Fiber Dispersion Compensating Module (DCM) .
86
Fiber Bragg Grating Dispersion Compensators
(or other channel compensators) . . . . . . . . . . . 87
Erbium Doped Fiber (Unpumped) . . . . . . . . . . . 88
Erbium Doped Fiber (Pumped). . . . . . . . . . . . . . 89
Narrowband Filter or DWDM Wavelength

8Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
Routing Device. . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Broadband Component
(Isolator, Circulator, Coupler, Attenuator and so
on) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Function Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
File Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Recall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
View Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Minimize Application . . . . . . . . . . . . . . . . . . . . . 97
System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Laser Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Laser On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Local . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Preset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Preset Display Properties. . . . . . . . . . . . . . . . . . 99
Select TLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Wavelength Meter. . . . . . . . . . . . . . . . . . . . . . . . 99
Status Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Real-Time Port Monitor. . . . . . . . . . . . . . . . . . . 101
Optimize Optical Modulator Bias . . . . . . . . . .102
Optimize Input Polarizer . . . . . . . . . . . . . . . . . . 103
Toggle mainframe local-lockout status . . . . . 103
Zero external power meters. . . . . . . . . . . . . . . 103
Setup Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition 9
Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
CD/PMD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Measurement Range. . . . . . . . . . . . . . . . . . . . .106
Normalization Range. . . . . . . . . . . . . . . . . . . . . 107
Sensitivity/Resolution . . . . . . . . . . . . . . . . . . .108
Laser Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Measure Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Begin Measurement . . . . . . . . . . . . . . . . . . . . .115
Begin Normalization . . . . . . . . . . . . . . . . . . . . . 115
Clear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Cancel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Normalize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Close . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
Begin Length . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Cancel Measurement . . . . . . . . . . . . . . . . . . . .118
Display Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119
X Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Y Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Auto Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Marker Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Marker Search . . . . . . . . . . . . . . . . . . . . . . . . . .122
Marker Functions. . . . . . . . . . . . . . . . . . . . . . . . 123
Define Trace . . . . . . . . . . . . . . . . . . . . . . . . . . . .124
Smooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Curve Fit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
Navigating the Front Panel. . . . . . . . . . . . . . . . . . . . . . . . .129
Change View. . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Next Trace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Toolbar Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130

10 Agilent 86038B Photonic Dispersion and Loss Analyzer, Second Edition
Zoom Functions . . . . . . . . . . . . . . . . . . . . . . . . .130
Measure Control Functions . . . . . . . . . . . . . . .132
Remote Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
How to Use This Chapter . . . . . . . . . . . . . . . . . 136
Recommended Control Sequence . . . . . . . . . . . . . . . . . . . 138
How to Configure the PDLA for Networking . 138
How to Connect the PDLA to Your Network . 138
How to Change Network Settings . . . . . . . . . 139
Install the Remote Client. . . . . . . . . . . . . . . . . . . . . . . . . . .141
Program Structure: events vs. sequential . . . . . . . . . . . .147
Front Panel Functions with No Remote Equivalent . . . .149
Enumerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Event Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
pdlaClient Front Panel Maps . . . . . . . . . . . . . . . . . . . . . . .158
Example 1: Simple Application for Controlling the PDLA . .
167
Starting a VB 6.0 PDLA Application . . . . . . . . . . . . . . . . . 168
Install Software . . . . . . . . . . . . . . . . . . . . . . . . . 168
Application Shell . . . . . . . . . . . . . . . . . . . . . . . . 168
Event Handling. . . . . . . . . . . . . . . . . . . . . . . . . . 170
Control Center Wavelength . . . . . . . . . . . . . . . 174
Complete source code . . . . . . . . . . . . . . . . . . . 175
Starting a VB.NET PDLA Application . . . . . . . . . . . . . . . .178
Install Software . . . . . . . . . . . . . . . . . . . . . . . . . 178
Application Shell . . . . . . . . . . . . . . . . . . . . . . . . 178