Network WOC-2-50-50 Manuale utente

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: [email protected]

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

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

1Product 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-2-50-5050%-50% split ratio

−WOC-2-90-1090%-10% split ratio

−WOC-2-95-0595%-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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WOC-2-50-50/-90-10/-95-05 WOC-4-25 Rev. 3

2Specifications

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

3Connections

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

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

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 largest1coupling 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.

Rx 1

Rx 2

WO C

50 / 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

1A WOC-2-50-50 has the same coupling ratio for both Optical 2 and Optical 3.

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

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

electronics.com/

Rx 1

Rx 2

WO C

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

4Module 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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