network-electronics.com

Wideband Optical Couplers

Rev. 3

Flashlink User Manual

WOC-2-50-50

WOC-2-90-10

WOC-2-95-05

WOC-4-25

WOC-2-50-50/-90-10/-95-05 WOC-4-25 Rev. 3

Network Electronics ASA

Thorøya P.O. Box 1020

N-3204 Sandefjord, Norway

Phone: +47 33 48 99 99 Fax: +47 33 48 99 98

Email: support@network-electronics.com www.network-electronics.com

Support Phone: +47 90 60 99 99

Revision history Current revision of this document is the uppermost in the table below.

Rev. Repl. Date Sign Change description

3 2 2007-06-07 RS Added WOC-4-25, applied new template, added new EC Declaration of Conformity, and added Appendix A Materials declaration and recycling information

2 1 2003-08-16 RS Added specification on multi mode coupler 1 0 2001-05-09 RS Changed Laser Safety Precaution description 0 A 2000-12-15 NBS Renamed Optronics to Electronics & Rev. Control A - 2000-08-09 RS Initial revision

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Contents

Revision history..........................................................................................................2

1 Product overview....................................................................................................4

2 Specifications..........................................................................................................5 2.1 WOC-2-xx-xx ................................................................................................................ 5 2.1.1 Single mode fibre (9/125 um)..................................................................................... 5 2.1.2 Multi mode fibre (62.5/125um).................................................................................. 5 2.2 WOC-4-25..................................................................................................................... 5 2.2.1 Single mode fibre (9/125um)...................................................................................... 5

3 Connections ...........................................................................................................6 3.1 Mounting the connector module................................................................................... 7 3.2 Preparation of module ................................................................................................... 7 3.3 Applying signals to the WOC-2-xx-xx connector module ............................................... 8 3.4 Application examples..................................................................................................... 8

4 Module status.......................................................................................................10 4.1 Front Panel - Status Monitoring ................................................................................... 10

5 Laser safety precautions ........................................................................................11

General environmental requirements for Network Electronics equipment................12

Product Warranty ....................................................................................................13

Appendix A Materials declaration and recycling information ...................................14 A.1 Materials declaration ................................................................................................... 14 A.2 Recycling information.................................................................................................. 14

EC Declaration of Conformity ..................................................................................15

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1 Product overview The Wideband Optical Couplers (WOC) in the Flashlink range are all-optical power splitters or combiners. One or multiple wavelengths can be used on the fibres. Today the product offering consists of WOC-2-xx-xx which is a 1:2 optical coupler available with different coupling ratios. The WOC-4-25 is a 1:4 optical coupler, where the optical power is divided and distributed equally to the four output ports.

Figure 1: Block diagram of the WOC-2 module operation.

The Flashlink 1:2 Wideband Optical Coupler is a fibre optical splitter/combiner module for use together with the W03-C1 connector module.

A typical application for these units is multiple distribution and linear, tapped fibre optic bus structures. The unit is passive and there is no need for power or control.

The WOC-2 optical coupler is made for the 2nd and 3rd optical window (1310nm and 1550nm) and is available with three different split ratios:

− WOC-2-50-50 50%-50% split ratio

− WOC-2-90-10 90%-10% split ratio

− WOC-2-95-05 95%-05% split ratio The WOC-2 has two input/output ports and one common port. The product is also available with multi mode fibre on request.

Figure 2: Block diagram of the WOC-4-25 module operation.

A typical application for the WOC-4-25 is distribution to multiple locations of single or multiple signals using WDM.

The WOC-4-25 optical coupler is made for wavelengths from 1260 up to 1620nm thus covering the whole CWDM band.

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2 Specifications

2.1 WOC-2-xx-xx

2.1.1 Single mode fibre (9/125 um) Optical wavelength: 2nd & 3rd opt. window (1310 nm & 1550 nm) Optical bandpass: 1270-1350 nm & 1510-1590 nm Return loss: Better than 40 dB w/SM fibre Directivity: Better than 55 dB Transmission circuit fibre: Single Mode Connector: SC/UPC

Split ratios and corresponding maximum insertion loss (incl. connectors):

WOC-2-50-50: 50 % / 50 % 4.3 dB / 4.3 dB WOC-2-90-10: 90 % / 10 % 1.33 dB / 11.7 dB WOC-2-95-05: 95 % / 05 % 1.1 dB / 15.3 dB

2.1.2 Multi mode fibre (62.5/125um) Optical wavelength: 2nd opt. window (1310nm) Directivity: better than 40dB Transmission circuit fibre: Multi Mode Connector: SC/UPC

Split ratios and corresponding maximum insertion loss (incl. connectors):

WOC-2-50-50: 50 % / 50 % 4.8 dB / 4.8 dB

2.2 WOC-4-25

2.2.1 Single mode fibre (9/125um) Optical passband: 1260-1620 nm Return loss: Better than 40 dB typ w/SM fibre Directivity: Better than 55 dB typ Transmission circuit fibre: Single Mode Connector: SC/UPC

Split ratio: 25%/25%/25%/25%

Insertion loss with connectors: Max 9dB over passband.

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3 Connections The WOC-2 has the same connector module as theWDM-2: W03-C1. This module is mounted at the rear of the sub-rack. The module is shown in Figure 3.

Figure 3: Overview of the W03-C1 connector module.

Figure 4: Overview of the WOC-4-25 connector module

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The WOC-4-25 is a self contained box similar to the CWDM filters that is mounted permanently in the Flashlink FR-2RU-10-2 from the rear.

Figure 5: The WOC-4-25

The WOC-4-25 can also be delivered in the N-BOX, which is used for stand alone applications.

3.1 Mounting the connector module This section only applies to the WOC-2-xx-xx if the module is not purchased pre-mounted in a sub-rack.

The details of how the connector module is mounted, is found in the user manual for the sub-rack frame FR-2RU-10-2.

This manual is also available from our web site: http://www.network-electronics.com/

3.2 Preparation of module Just before the module and the connector module are put together, the dust caps should be removed and stored in the enclosed plastic bag. The dust caps are removed from the connector module and the module card as we see in Figure 6 and Figure 7.

Figure 6: Removal of the dust caps from the WOC connector module.

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Figure 7: Removal of plastic dust caps from WOC module.

3.3 Applying signals to the WOC-2-xx-xx connector module Optical 1 is always the common port (orange lead).

Optical 2 has largest1 coupling ratio (blue lead)

Optical 3 has lowest coupling ratio (natural lead).

3.4 Application examples We show some examples of how a WOC can be used for different applications.

TxRx 1

Rx 2WOC50 / 50

Figure 8: Redundant solution – Same signal on two different fibres.

In Figure 8 we have a solution where the signal path from transmitter (Tx) to the receiver (Rx) is redundant. Since both Rx1 and Rx2 are located at the same place, the signal is divided into two equal parts and transmitted over two different fibres. At the receiver end the same signal is present from different receiver cards, a redundant solution. This solution is also suitable for transmitting the same signal to two different locations; each located approximately the same distance from the transmitter.

If the distances from the two different receiver-locations to the transmitter are very different a WOC-2-90-10 or a WOC-2-95-05 is more suitable. Which WOC to use in which case can be found by calculating the optical transmission budgets for the involved links, or by calling your Network Electronics representative. More information on transmission budgets can be 1 A WOC-2-50-50 has the same coupling ratio for both Optical 2 and Optical 3.

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found in the user manual for the sub-rack frame, and on our web site http://www.network-electronics.com/

Tx

Rx 1

Rx 2WOC90 / 10

90

10

Figure 9: Signal tapping / monitoring / distribution with a WOC-2-90-10.

If one of the Rxs for some reason is not connected, we recommend bypassing the WOC module until the Rx is in operation again. This is to avoid back-reflections degrading the signal.

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4 Module status The WOC-2-xx-xx and the WOC-4-25 are all-optical modules with no electrical connections; hence there will be no on-board processing or monitoring. If the module is faulty this can be monitored on the receiver end. The only possibilities for the module to fail are if either te fibre is broken, or the fibre connections at the rear are bad. Then no signal will pass the module.

4.1 Front Panel - Status Monitoring The WOC-2-xx-xx and the WOC-4-25 are all-optical modules, so there are no LEDs on the module.

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5 Laser safety precautions These are guidelines to limit hazards from laser exposure.

All the available EO units in the Flashlink range include a laser.

Therefore this note on laser safety should be read thoroughly even though there is no laser onboard this product.

The lasers emit light at 1310 nm or 1550 nm. This means that the human eye cannot see the beam, and the blink reflex cannot protect the eye. (The human eye can see light between 400 nm to 700 nm).

A laser beam can be harmful to the human eye (depending on laser power and exposure time). Therefore:

Be careful when connecting / disconnecting fibre pigtails (ends).

Never look directly into the pigtail of the laser/fibre.

Never use microscopes, magnifying glasses or eye loupes to look into a fibre end.

Use laser safety goggles blocking light at 1310 nm and at 1550 nm

Instruments exist to verify light output power: Power meters, IR-cards etc.

Flashlink features:

The FR-2RU-10-2 is classified as Class 1 laser product according to EN 60 825-1:94/A11:96, and CFR Ch1 (1997) Part 1040.10.

If the front panel is removed, the FR-2RU-10-2 is classified as Class 1 laser product according to EN 60 825-1:94/A11:96, and class IIIb according to CFR Ch1 (1997) Part 1040.10.

Maximum output power2: 5 mW

Operating wavelengths: > 1260 nm

2 Max power is for safety analysis only and does not represent device performance.

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General environmental requirements for Network Electronics equipment

1. The equipment will meet the guaranteed performance specification under the following environmental conditions:

- Operating room temperature range: 0°C to 50°C - Operating relative humidity range: Up to 90 % (non-condensing) 2. The equipment will operate without damage under the following environmental

conditions: - Temperature range: -10°C to 55°C - Relative humidity range: Up to 95 % (non-condensing)

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Product Warranty

The warranty terms and conditions for the product(s) covered by this manual follow the General Sales Conditions by Network Electronics ASA. These conditions are available on the company web site of Network Electronics ASA:

www.network-electronics.com

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Appendix A Materials declaration and recycling information

A.1 Materials declaration For product sold into China after 1st March 2007, we comply with the “Administrative Measure on the Control of Pollution by Electronic Information Products”. In the first stage of this legislation, content of six hazardous materials has to be declared. The table below shows the required information.

Toxic or hazardous substances and elements

組成名稱 Part Name

鉛 Lead (Pb)

汞 Mercury

(Hg)

镉 Cadmium

(Cd)

六价铬 Hexavalent Chromium

(Cr(VI))

多溴联苯 Polybrominated

biphenyls (PBB)

多溴二苯醚 Polybrominated diphenyl ethers

(PBDE)

WOC-2-50-50/-90-10/-95-05 WOC-4-25

O O O O O O

O: Indicates that this toxic or hazardous substance contained in all of the homogeneous materials for this part is below the limit requirement in SJ/T11363-2006. X: Indicates that this toxic or hazardous substance contained in at least one of the homogeneous materials used for this part is above the limit requirement in SJ/T11363-2006.

This is indicated by the product marking:

A.2 Recycling information Network Electronics provides assistance to customers and recyclers through our web site http://www.network-electronics.com. Please contact Network Electronics’ Customer Support for assistance with recycling if this site does not show the information you require.

Where it is not possible to return the product to Network Electronics or its agents for recycling, the following general information may be of assistance:

− Before attempting disassembly, ensure the product is completely disconnected from power and signal connections.

− All major parts are marked or labelled to show their material content.

− Depending on the date of manufacture, this product may contain lead in solder.

− Some circuit boards may contain battery-backed memory devices.

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EC Declaration of Conformity

Network Electronics ASA P.B. 1020, N-3204 SANDEFJORD, Norway

MANUFACTURER

AUTHORISED REPRESENTATIVE (Established within the EEA)

Not applicable

WOC-2-50-50/-90-10/-95-05 WOC-4-25 MODEL NUMBER(S)

Wideband Optical Coupler DESCRIPTION

LVD 73/23/EEC EMC 89/336/EEC

DIRECTIVES this equipment complies with

EN 55103-1:1996 EN 55103-2:1996 EN 60950-1:2006

HARMONISED STANDARDS applied in order to verify compliance with Directive(s)

TEST REPORTS ISSUED BY Notified/Competent Body Report no:

Nemko 200013115

Not applicable TECHNICAL CONSTRUCTION FILE NO

2000 YEAR WHICH THE CE-MARK WAS AFFIXED

TEST AUTHORIZED SIGNATORY

MANUFACTURER AUTHORISED REPRESENTATIVE (Established within EEA) Date of Issue

2007-06-07

Place of Issue

Not applicable Sandefjord,

Norway

Nils B. Sannes Name

Quality Manager (authorised signature)

Position

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