Keysight Technologies 81940A Manuale utente

Keysight 81940A, 44A, 49A,

80A & 89A Compact Tunable

Laser Source Modules

User’s Guide

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or

translation into a foreign language) without

prior agreement and written consent from

Keysight Technologies as governed by

United States and international copyright

laws.

Manual Part Number

81980-90A11

Edition

Edition 5, March 2015

Edition 4, April 2005

Edition 3, January 2005

Edition 2, July 2004

Edition 1, October 2003

Printed in Germany

Keysight Technologies, Deutschland

GmbH

Herrenberger Straße 130

71034 Böblingen, Germany.

Subject Matter

The material in this document is

subject to change without notice.

Keysight Technologies makes no

warranty of any kind with regard to this

printed material, including, but not

limited to, the implied warranties of

merchantability and fitness for a

particular purpose.

Keysight Technologies shall not be

liable for errors contained herein or for

incidental or consequential damages

in connection with the furnishing,

performance, or use of this material.

Warranty

The material contained in this

document is provided “as is,” and is

subject to being changed, without

notice, in future editions. Further, to

the maximum extent permitted by

applicable law, Keysight disclaims all

warranties, either express or implied,

with regard to this manual and any

information contained herein,

including but not limited to the implied

warranties of merchantability and

fitness for a particular purpose.

Keysight shall not be liable for errors or

for incidental or consequential

damages in connection with the

furnishing, use, or performance of this

document or of any information

contained herein. Should Keysight and

the user have a separate written

agreement with warranty terms

covering the material in this document

that conflict with these terms, the

warranty terms in the separate

agreement shall control.

Technology Licenses

The hardware and/or software

described in this document are

furnished under a license and may be

used or copied only in accordance with

the terms of such license.

Restricted Rights Legend

If software is for use in the performance of

a U.S. Government prime contract or

subcontract, Software is delivered and

licensed as “Commercial computer

software” as defined in DFAR 252.227-7014

(June 1995), or as a “commercial item” as

defined in FAR 2.101(a) or as “Restricted

computer software” as defined in FAR

52.227-19 (June 1987) or any equivalent

agency regulation or contract clause. Use,

duplication or disclosure of Software is

subject to Keysight Technologies’ standard

commercial license terms, and non-DOD

Departments and Agencies of the U.S.

Government will receive no greater than

Restricted Rights as defined in FAR

52.227-19(c)(1-2) (June 1987). U.S.

Government users will receive no greater

than Limited Rights as defined in FAR

52.227-14 (June 1987) or DFAR

252.227-7015 (b)(2) (November 1995), as

applicable in any technical data.

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.

Keysight Technologies Sales and Service Offices

For more information about Keysight Technologies test and measurement

products, applications, services, and for a current sales office listing, viesit

our web site:

http://www.keysight.com/find/lightwave

You can also contact one of the following centers and ask for a test and

measurement sales representative.

United States: 1 800 829 4444

1 800 829 4433 (FAX)

Canada: 1 877 894 4414

1 905 282 6495 (FAX)

Europe: +31 20 547 2111

+31 20 547 2190 (FAX)

Japan: 120 421 345

120 421 678 (FAX)

Mexico (52 55) 5081 9469

(52 55) 5081 9467 (FAX)

Australia: 800 629 485

800 142 134 (FAX)

Asia-Pacific: +852 800 930 871

+852 2 506 9233(FAX)

Latin America +55 11 4197 3600

+55 11 4197 3800 (FAX)

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, “Specifications.

This chapter contains the full performance specifications for the modules.

Chapter 4, “Performance Tests.

This chapter contains full detailed instructions that enable you to run a

performance test on a High Power Optical Attenuator. Also included are

Test Report sheets to record the measurements taken during the

performance test.

Chapter 5, “Cleaning Information.

This appendix contains information as to how best clean your instrument,

along with some general safety instructions that you should follow when

cleaning your instrument.

Keysight 81940A, 44A, 49A, 80A & 89A Compact TLS modules, Edition 5 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

Introduction 17

Typical Use Models 20

Optical Output 22

Polarization Maintaining Fiber 22

Angled and Straight Contact Connectors 23

Signal Input and Output 24

Accessories 25

Modules and Options 26

Modules 27

Options 27

Connector Interfaces 28

User’s Guides 29

Specifications 31

Definition of Terms 32

General Definitions 46

Compact Tunable Laser Module Specifications 47

Conditions 53

Supplementary Performance Characteristics 54

General 56

6Keysight 81940A, 44A, 49A, 80A & 89A Compact TLS modules, Edition 5

Performance Tests 57

Required Test Equipment 58

Test Record 59

Performance Test Instructions 60

General test Setup 60

Wavelength Tests 61

Wavelength Meter Settings for all Wavelength Tests 61

Wavelength Accuracy 62

Absolute and Relative Wavelength Accuracy 62

Mode-Hop Free Tuning 66

Wavelength Repeatability 67

Power Tests 69

Maximum Output Power 69

Power Linearity 74

Power Flatness versus Wavelength 77

Power Stability 80

Signal-to-Source Spontaneous Emission Ratio 83

Optional Performance Tests 86

Signal-to-Total-Source Spontaneous Emission Ratio 86

Test Records 90

Test Record 91

Test Record 101

Test Record 111

Test Record 118

Test Record 128

Cleaning Information 139

Cleaning Instructions 140

Safety Precautions 140

Why is it important to clean optical devices ? 141

What do I need for proper cleaning? 142

Preserving Connectors 146

Cleaning Instrument Housings 146

Which Cleaning Procedure should I use? 147

How to clean connectors 148

How to clean connector interfaces 150

Keysight 81940A, 44A, 49A, 80A & 89A Compact TLS modules, Edition 5 7

How to clean bare fiber adapters 151

How to clean instruments with a fixed connector interface 152

Additional Cleaning Information 153

Other Cleaning Hints 154

Index 155

8Keysight 81940A, 44A, 49A, 80A & 89A Compact TLS modules, Edition 5

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