Agilent Technologies 81950A Manual de usuario

Agilent Technologies

Agilent 81950A

Compact Tunable Laser Source module

User’s Guide

Notices

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Manual Part Number

81950-90B01

Edition

Second edition, June 2012

Agilent Technologies Deutschland GmbH

Herrenberger Straße 130

71034 Böblingen, Germany

Subject Matter

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Safety Notices

CAUTION

A CAUTION notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly

performed or adhered to, could

result in damage to the product

or loss of important data. Do not

proceed beyond a CAUTION

notice until the indicated

conditions are fully understood

and met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice,

or the like that, if not correctly

performed or adhered to, could

result in personal injury or

death. Do not proceed beyond a

WARNING notice until the

indicated conditions are fully

understood and met.

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In This Guide...

Chapter 1, “Getting Started"

This chapter contains an introductory description of the modules and aims

to make the modules familiar to you.

Chapter 2, “Accessories"

This chapter contains details of the various modules and options available.

Chapter 3, “Operating Instructions"

This chapter provides a general description of the specific features of the

81950A compact tunable laser module.

Chapter 4, “Programming Instructions"

This chapter describes the SCPI Commands for use of 81950A compact

tunable laser modules and N7711A, N7714A single and 4-port Tunable

Laser System Sources.

Chapter 5, “Specifications"

This chapter contains the specifications of the 81950A module.

Chapter 6, “Cleaning Information"

This chapter provides the cleaning instructions

Chapter 7, “Index"

Agilent 81950A Compact TLS module,First Edition 5

Table of Contents

Getting Started 11

Safety Considerations 12

Safety Symbols 12

Initial Inspection 13

Line Power Requirements 13

Operating Environment 13

Input/Output Signals 14

Storage and Shipment 14

Initial Safety Information for Tunable Laser Modules 15

Laser Safety Labels 16

Laser class 1M label 16

Introduction 17

What is a Tunable Laser Source? 17

Installation 17

Front Panels 17

Front Panel Controls and Indicators 18

Typical Use Models 19

Optical Output 21

Polarization Maintaining Fiber 21

Angled and Straight Contact Connectors 22

Signal Input and Output 23

Accessories 25

Modules and Options 26

Modules 27

Options 27

Connector Interfaces 28

User’s Guides 29

6Agilent 81950A Compact TLS module, First Edition

Operating Instructions 31

Operation 33

Parameters 33

Output Frequency 33

Limitations 33

Changing the Grid (f0, s) 34

Operation Modes 34

Switching Modes 34

Preset Values 35

Differences to Other Tunable Laser Source Modules 35

The Graphical User Interface 36

Differences among 8164A/B, 8163A/B and 8166A/B 36

Soft Lock 36

How to Set a Parameter 37

How to Set the Power 39

How to Switch Operation Mode 40

How to Set the Wavelength or Frequency 43

How to Switch On the Laser 44

How to set Frequency Parameters in Grid Mode 45

How to Check the Output Frequency or Wavelength 46

How to Modulate a Signal 47

The User Interface 49

The Module's Front Panel 49

Programming Instructions 51

Summary 52

Detailed Description 54

The OUTPut sub tree 54

The SOURce:CHANnel:POWer sub tree 56

The SOURce:CHANnel:WAVelength sub tree 59

The SOURce:CHANnel:FREQuency sub tree 61

The SOURce:CHANnel:MODUIation sub tree 67

Error Messages 71

Status Bits 72

Agilent 81950A Compact TLS module,First Edition 7

Differences among 81950A, N7711A and N7714A 73

81950A Only 73

N771A, N7714A Only 73

Specifications 75

Definition of Terms 77

Absolute wavelength (frequency) accuracy 78

External analog modulation - modulation depth 78

Linewidth 78

Maximum output power 79

Operating temperature and humidity 79

Output isolation 79

Polarization extinction ratio 80

Power flatness versus wavelength 81

Power repeatability 81

Power stability 82

Relative intensity noise (RIN) 82

Relative wavelength (frequency) accuracy 83

Return loss 83

SBS suppression - effective linewidth 84

Side-mode suppression ratio 84

Signal to source spontaneous emission ratio 84

Tuning time 85

Wavelength range 85

Wavelength (frequency) repeatability 86

Wavelength resolution 86

Wavelength (frequency) stability 86

Compact Tunable Laser Module Specifications 87

Agilent 81950A Compact Tunable Laser Source 88

Specifications 89

Cleaning Information 91

Cleaning Instructions 92

Safety Precautions 92

Why is it important to clean optical devices ? 93

What do I need for proper cleaning? 94

8Agilent 81950A Compact TLS module, First Edition

Preserving Connectors 98

Cleaning Instrument Housings 98

Which Cleaning Procedure should I use? 99

How to clean connectors 100

How to clean connector interfaces 102

How to clean bare fiber adapters 103

How to clean instruments with a fixed connector interface 104

Additional Cleaning Information 105

Other Cleaning Hints 106

Index 107

Agilent 81950A Compact TLS module,First Edition 9

10 Agilent 81950A Compact TLS module, First Edition

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