EXFO XTM-50 Series Manuel utilisateur

User Guide

XTM-50

Optical Tunable Filter

www.EXFO.com

ii XTM-50

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mechanically, or by any other means such as photocopying, recording or otherwise,

without the prior written permission of EXFO 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 publication is subject to change without notice.

Trademarks

EXFO’s trademarks have been identified as such. However, the presence or absence of

such identification does not affect the legal status of any trademark.

Units of Measurement

Units of measurement in this publication conform to SI standards and practices.

Patents

The exhaustive list of patents is available at www.EXFO.com/patent.

Version number: 3.0.0.1

Information in this document applies to the XTM-50 version B.

Contents

Optical Tunable Filter iii

Contents

Copyright Information .........................................................................................................................................ii

1 Introducing the XTM-50 ........................................................................................................1

Technical Specifications .......................................................................................................................................1

XTM-50 Overview ................................................................................................................................................3

Conventions .........................................................................................................................................................5

2 Safety Information ................................................................................................................7

3 Getting Started with Your XTM-50 .......................................................................................9

Unpacking and Installing the XTM-50 ..................................................................................................................9

Connecting an Optical Source to the XTM-50 ....................................................................................................10

4 Setting the Wavelength/Frequency and FWHM Values .....................................................11

Adjusting the Central Wavelength .....................................................................................................................11

Adjusting the FWHM .........................................................................................................................................14

Reaching a Position on the Bandwidth or Wavelength Tuning Actuator ............................................................16

5 Maintenance ........................................................................................................................17

Cleaning Optical Connectors ..............................................................................................................................18

Cleaning the Cover of the XTM-50 .....................................................................................................................20

Recycling and Disposal ......................................................................................................................................20

6 Troubleshooting ..................................................................................................................21

Displaying the User Documentation ..................................................................................................................21

Contacting the Technical Support Group ...........................................................................................................21

Transportation ...................................................................................................................................................21

7 Warranty ..............................................................................................................................23

General Information ..........................................................................................................................................23

Gray Market and Gray Market Products .............................................................................................................23

Liability ..............................................................................................................................................................24

Exclusions ..........................................................................................................................................................24

Certification .......................................................................................................................................................24

Service and Repairs ............................................................................................................................................25

EXFO Service Centers Worldwide .......................................................................................................................26

Optical Tunable Filter 1

1 Introducing the XTM-50

The XTM-50 is a reliable optical tunable filter that features wavelength and bandwidth

tuning. The large wavelength range, the narrow FWHM and the flat-top shape ensure a

clean extraction of the optical signal. It is designed for closely-spaced channel selection and

extraction in DWDM applications.

The XTM-50 is based on the use of a reflection diffraction grating mounted in a

Littman-Metcalf configuration.

When an optical signal is detected at the XTM-50 input port, the input wave is directed

towards the output port after passing through the XTM-50 monochromator.

Technical Specifications

The following table lists the technical specifications of the XTM-50 models.

All optical specifications apply at constant temperature.

IMPORTANT

The following technical specifications can change without notice. The information

presented in this section is provided as a reference only. To obtain this product’s

most recent technical specifications, visit the EXFO Web site at www.exfo.com.

Standard Ultrafine O-bandaWide

Optical specifications

Wavelength range 1450–1650 nm 1480–1620 nm 1260–1360 nm 1525–1610 nm

Wavelength resolution 5 pmb5 pmb5 pmb5 pmb

Minimum bandwidth

(FWHM)

50 pm

(6.25 GHz)

32 pm

(4 GHz)

50 pm

(8 GHz)

50 pm

(6.25 GHz)

Maximum bandwidth

(FWHM)

950 pm

(120 GHz)

650 pm

(80 GHz)

900 pm

(160 GHz)

5000 pm

(625 GHz)

Bandwidth resolution 1 pm 1 pm 1 pm 0.3 % of FWHM

typical

Filter edge gradient 500 dB/nm

typicalc

800 dB/nm

typical

500 dB/nm

typicalc

500 dB/nm

typicald

Insertion loss 5 dB (4.5 dB

typical)e,f

5 dB (4.0 dB

typical)f,g

5 dB (4.5 dB

typical)f,h

5 dB (4.5 dB

typical)i,j

Flatness 0.2 dBk0.2 dBl0.3 dBk,m 0.2 dBn

Polarization dependent

loss ±0.2 dBe±0.2 dBg±0.2 dBh±0.2 dBi

Out-of-band

suppression (crosstalk)

40 dB (60 dB

typical)o

40 dB (50 dB

typical)o

40 dB (60 dB

typical)o

40 dB (45 dB

typical)o

Introducing the XTM-50

2XTM-50

Technical Specifications

Interfaces

Optical fiber type SMF or PMF SMF

Connector type FC/PC or FC/APC

Operating conditions

Maximum optical input

power

30 dBm 27 dBm

Temperature range 15° to 35°C, indoor use only

Storage temperature -20°C to 60°C

Maximum relative

humidity

80 % for temperatures up to 31°C decreasing linearly to 50 %

relative humidity at 40°C

Altitude 2000 m (maximum operating)

Size and Weight

Dimensions (W x D x H) 193 mm x 231 mm x 164 mm (7.6 in x 9.1 in x 6.4 in)

Weight 3.5 kg (7.7 lbs)

a Specifications apply for wavelengths not equal to any water absorption line.

b Typical, related to user dexterity.

c From -3 and -40 dB for FWHM <800 pm.

d Between -3 and -40 dB. Typically 550 dB/nm @ FWHM = 50 pm,

450 dB/nm @ FWHM = 1 nm, 225 dB/nm @ FWHM = 5 nm.

e From 1500 to 1600 nm & FWHM >100 pm.

f At lowest FWHM the insertion loss is 7 dB typical.

g From 1500 to 1600 nm & FWHM >60 pm.

h From 1280 to 1340 nm & FWHM >100 pm.

iForFWHM>100pm.

j At lowest FWHM the insertion loss is < 7.0 dB.

k Centered width of FWHM - 150 pm. For 150 pm < FWHM < 650 pm.

l Centered width of FWHM - 100 pm. For 100 pm < FWHM < 500 pm.

m From 1280 to 1340 nm.

n Centered width of FWHM - 150 pm. For 150 pm < FWHM < 2000 pm.

o Measured 1 nm away from the -3 dB points.

Standard Ultrafine O-bandaWide

Introducing the XTM-50

Optical Tunable Filter 3

XTM-50 Overview

Handle

The handle bar enables you to carry the XTM-50.

Micrometer Actuators

Two high resolution micrometer actuators enable you to perform wavelength and

bandwidth tuning.

The screw located on top of the actuators enable you to lock the actuator at the wanted

setting.

³The bandwidth actuator is composed of two graduated scales:

³On the sleeve: 13 mm stroke with 0.5 mm graduation interval.

³On the thimble (rotary part): 250 μm by turn, with 5 μm graduation interval.

³The wavelength actuator includes coarse and fine position adjustments, with four

graduated scales:

³Coarse adjustment:

On the sleeve: 13 mm stroke with 0.5 mm graduation interval.

On the thimble (rotary part): 0.5 mm by turn, with 0.01 mm graduation interval.

³Fine adjustment:

On the sleeve: 200 μm stroke with 25 μm graduation interval.

On the thimble: 25 μm by turn, with 0.5 μm graduation interval.

For more details on how to adjust wavelength and FWHM, see Setting the

Wavelength/Frequency and FWHM Values on page 11.

Connector’s

drawer

Handle

Drawer screw

Lock

Wavelength actuator:

Fine adjustment

Wavelength actuator:

Coarse adjustment

Bandwidth

actuator

Optical

connectors

Introducing the XTM-50

4XTM-50

XTM-50 Overview

Optical Connectors

The two following optical connectors, protected by a dust cap, are located on the front

panel:

³Input: channel filter input port.

³Output: channel filter output port.

The two optical connectors are mounted on a drawer, which enables you to access the

internal optical connectors for cleaning (see Cleaning Optical Connectors on page 18).

Retractable Leg

The retractable leg enable you to tilt the XTM-50 upward for convenient purpose, so that it

stands on both front legs and the rear feet (see Unpacking and Installing the XTM-50 on

page 9).

Labels and markings

Label Description

Identification of the product.

Indicates serial number, model, options (if any) and date

of manufacture.

Warranty seal.

The XTM-50 cover must not be open, otherwise the

warranty is not valid anymore.

MANUFACTURED / FABRIQUE

OPTIONS

MODEL / MODELE

Made in France

xxxx-xx

XTM-50

xxxxxxxxxxxx

SERIAL NUMBER / NUMERO DE SERIE

Introducing the XTM-50

Optical Tunable Filter 5

Conventions

Before using the product described in this guide, you should understand the following

conventions:

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in

death or serious injury. Do not proceed unless you understand and meet the

required conditions.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in

minor or moderate injury. Do not proceed unless you understand and meet the

required conditions.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in

component damage. Do not proceed unless you understand and meet the required

conditions.

IMPORTANT

Refers to information about this product you should not overlook.

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