EXFO FLS-2600 User manual

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FLS-2600

Tunable Laser Source

If the equipment described herein bears the symbol, the said equipment complies with

the European Community Directive and Standards found in the Declaration of Conformity.

If the equipment described herein bears an FCC statement, the said equipment complies with

the relevant Federal Communications Commission standards.



Instruction Manual

Second Edition

P/N: MAN-141-I .2ACE

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a retrieval system, or transmitted in any form or by any means, be it

electronic, mechanical, photocopying, recording, or otherwise, without the

prior written permission of EXFO Electro-Optical Engineering Inc. (EXFO).

Information provided by EXFO is believed to be accurate and reliable.

However, no responsibility is assumed by EXFO for its use nor for any

infringements of patents or other rights of third parties that may result from

its use. No license is granted by implication or otherwise under any patent

rights of EXFO.

EXFO’s Commerce And Government Entities (CAGE) code under the North

Atlantic Treaty Organization (NATO) is 0L8C3.

The information contained in this manual is subject to change without

notice.

Words which we consider as trademarks have been identified as such.

However, neither the presence nor absence of such identification affects

the legal status of any trademark.

February 2001

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Contents

Tunable Laser Source iii

Contents

Certification Information.........................................................................................................vi

1 Introduction .................................................................................................. 1

FLS-2600 General Description.................................................................................................. 1

FLS-2600 Main Applications .................................................................................................... 1

FLS-2600 Models and Connector Types ................................................................................... 2

2 Safety Information ....................................................................................... 3

Safety Conventions.................................................................................................................. 3

General Safety Information ..................................................................................................... 3

3 Getting Started ............................................................................................. 7

Hardware Description.............................................................................................................. 7

Turning the FLS-2600 On and Off............................................................................................ 9

Resetting the FLS-2600..........................................................................................................10

Accessing Menus................................................................................................................... 11

4 Using the FLS-2600 Main Menu .................................................................. 13

Setting the Wavelength......................................................................................................... 13

Setting the Output Power ..................................................................................................... 14

Activating/Deactivating the Source........................................................................................ 15

Setting the Source................................................................................................................. 16

Setting the Wavelength Display Unit ..................................................................................... 17

Activating the Wavelength Offset.......................................................................................... 17

5 Using the FLS-2600 Setup Menu ................................................................ 19

Consulting the Shortlist of Wavelengths ............................................................................... 19

Adding a Wavelength to the Shortlist ................................................................................... 19

Deleting a Wavelength from the Shortlist ............................................................................. 21

Setting the Offset Value ........................................................................................................21

Setting the Display Intensity.................................................................................................. 22

Saving a Setup Configuration................................................................................................ 23

Recalling a Setup Configuration ............................................................................................ 24

Displaying the Software Version Number .............................................................................. 25

6 Using the FLS-2600 Sweep Menu ............................................................... 27

Setting the Start Wavelength of the Sweep........................................................................... 27

Setting the End Wavelength of the Sweep ............................................................................ 28

Setting the Number of Sweeps.............................................................................................. 29

Setting the Speed of the Sweep ............................................................................................ 30

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Contents

iv FLS-2600

Starting the Sweep................................................................................................................ 31

Stopping the Sweep..............................................................................................................32

Saving a Sweep Configuration .............................................................................................. 32

Recalling a Sweep Configuration........................................................................................... 34

7 Remote Control ...........................................................................................35

Setting the FLS-2600 for Remote Control.............................................................................. 35

Communication Parameters .................................................................................................. 36

Standard Status Data Structure............................................................................................. 37

Command Structure.............................................................................................................. 40

General Commands—Quick Reference .................................................................................. 41

General Commands............................................................................................................... 42

Specific Commands—Quick Reference .................................................................................. 48

Specific Commands...............................................................................................................51

Error Messages Format.......................................................................................................... 66

SCPI Management Errors (System Errors) .............................................................................. 67

FLS-2600 Error Messages ...................................................................................................... 68

8 Technical Specifications ..............................................................................69

Optical Specifications............................................................................................................ 69

General Specifications ........................................................................................................... 70

9 Maintenance and Troubleshooting ............................................................71

General Maintenance ............................................................................................................ 71

Cleaning Optical Ports........................................................................................................... 71

Fuse Replacement ................................................................................................................. 72

Periodic Source Verification................................................................................................... 73

Software Upgrade................................................................................................................. 73

Recalibration ......................................................................................................................... 75

Transportation and Storage................................................................................................... 75

Contacting the Customer Service Group ............................................................................... 76

10 Warranty ......................................................................................................77

General Information.............................................................................................................. 77

Liability.................................................................................................................................. 78

Exclusions.............................................................................................................................. 78

Certification .......................................................................................................................... 78

Service and Repairs ............................................................................................................... 78

Glossary.............................................................................................................81

Index..................................................................................................................87

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Figures

Tunable Laser Source v

Figures

Figure 2-1. Laser Warning Label ............................................................................................ 4

Figure 3-1. FLS-2600 Front Panel ........................................................................................... 7

Figure 3-2. FLS-2600 Back Panel............................................................................................ 8

Figure 3-3. FLS-2600 Product Nameplate .............................................................................. 9

Figure 3-4. RS-232 Connector Pinout .................................................................................... 9

Figure 3-5. Menu Diagram .................................................................................................. 11

Figure 4-1. Wavelength Mode ............................................................................................. 13

Figure 4-2. Power Mode...................................................................................................... 14

Figure 4-3. Activated Source ............................................................................................... 15

Figure 4-4. ASE Mode.......................................................................................................... 16

Figure 4-5. Wavelength Unit................................................................................................ 17

Figure 4-6. Offset Activated ................................................................................................ 18

Figure 5-1. Default Wavelength Display .............................................................................. 20

Figure 5-2. Offset Value Display .......................................................................................... 21

Figure 5-3. Dimmer Status................................................................................................... 22

Figure 5-4. Current Configuration Number ......................................................................... 23

Figure 5-5. Recalled Configuration ...................................................................................... 24

Figure 5-6. Software Version Number ................................................................................. 25

Figure 6-1. Default Start Wavelength .................................................................................. 27

Figure 6-2. Default End Wavelength.................................................................................... 28

Figure 6-3. Default Number of Repetition ........................................................................... 29

Figure 6-4. Default Speed.................................................................................................... 30

Figure 6-5. Start Display ...................................................................................................... 31

Figure 6-6. Stop Display ...................................................................................................... 32

Figure 6-7. Current Configuration Number ......................................................................... 33

Figure 6-8. Configuration Number ...................................................................................... 34

Figure 7-1. Current Setting.................................................................................................. 35

Figure 7-1. Standard Status Data Structures (IEEE 488.3).................................................... 39

Figure 7-2. Error Message Format ....................................................................................... 66

Figure 9-1. Pulling Out the Fuse Holder............................................................................... 72

Figure 9-2. Replacing the Fuses ........................................................................................... 73

Figure 9-3. Software Upgrade Utility................................................................................... 74

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Certification Information

vi FLS-2600

Certification Information

F.C.C. INFORMATION TO USER

This unit has been tested and found to comply with the limits for a Class B

digital device, pursuant to Part 15 (Subpart B) of the FCC Rules. These

limits are designed to provide reasonable protection against harmful

interference in a residential installation. This unit generates, uses, and can

radiate radio frequency energy and, if not installed and used in accordance

with the instruction manual, may cause harmful interference to radio

communications. However, there is no guarantee that interference will not

occur in a particular installation. If this unit does cause harmful

interference to radio or television reception, which can be determined by

turning the unit off and on, the user is encouraged to try to correct the

interference by one or more of the following measures:

➤Reorient or relocate the receiving antenna.

➤Increase the separation between the unit and receiver.

➤Connect the unit into an outlet on a circuit different from that to which

the receiver is connected.

➤Consult the dealer or an experienced radio/TV technician for help.

WARNING

Changes or modifications not expressly approved by EXFO

Electro-Optical Engineering Inc. could void the user’s authority to

operate the unit.

➤This unit is equipped with a shielded three-wire power cord and plug.

Use this power cord in conjunction with a properly grounded electrical

outlet to avoid electrical shock and to reduce radio frequency

interference that may emanate from the power cord.

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Certification Information

Tunable Laser Source vii

➤Use of shielded remote I/O cables, with properly grounded shields and

metal connectors, is recommended in order to reduce radio frequency

interference that may emanate from these cables.

➤When the GPIB option is present, this unit is equipped with a shielded

GPIB cable.

INDEPENDENT LABORATORY TESTING

This unit has undergone extensive certification testing both

internally, at EXFO, and externally, at an independent, qualified laboratory.

All pre-qualification tests were performed at EXFO while all final tests were

performed at UltraTech Engineering Labs Inc., a renowned test laboratory

from Mississauga, Canada. This guarantees the unerring objectivity and

authoritative compliance of all test results.

INFORMATION TO USER

This unit has been tested and found to comply with the limits for a Class B

digital device. Please see the Declaration of Conformity.

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This page is intentionally left blank.

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Tunable Laser Source 1

1Introduction

FLS-2600 General Description

The FLS-2600 Tunable Laser Source combines a tunable laser with a

broadband source covering the 1520 to 1570 nm range. The FLS-2600 has

been specially designed for testing passive components. Its coherence

length is perfectly suited for detecting parasitic etalon or other interference

effects inside components. This medium coherence also avoids problems

such as connector-induced interference, which is common when using

high-coherence, external cavity lasers. Its ruggedness and immunity to

vibration make it perfect for production testing, product qualification, and

R&D use.

The 60 dB sidemode suppression ratio of the FLS-2600 Tunable Laser

Source provides a better dynamic range than what is possible with a

traditional external cavity laser, thus allowing you to measure crosstalk at

the higher level that is required for passive component testing.

FLS-2600 Main Applications

Main applications include the complete characterization or alignment of

filters, multiplexers, Bragg gratings, and other DWDM components. For

EDFA testing, use the FLS-2600 Tunable Laser Source to check

wavelength-dependent gain, noise contribution, and saturation properties.

It is also very useful for determining the spectral sensitivity of receivers and

detectors.

Furthermore, the FLS-2600 Tunable Laser Source is also equipped to

operate in amplified spontaneous emission mode as a non-coherent

broadband source with a spectrum of non-flattened erbium-doped fiber.

This operation mode is ideal for high-loss tests (isolation, directivity, and

return loss) on passive components.

The FLS-2600 Tunable Laser Source is controlled by supplied software that

offers both manual and programmed specifications of wavelength output

and power level, as well as a range of sweep options. This easy-to-use,

flexible software allows the FLS-2600 Tunable Laser Source to be

combined with a wide variety of other test equipment to perform

automated measurements.

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