Olson Technology OTEA-CO-B series Manuel utilisateur

Phone:

Fax:

025-000519 REV x1 3/30/05

(209) 586-1022

(800) 545-1022

(209) 586-1026

E-Mail: [email protected]

www.olsontech.com

OTEA-CO-Bxx-x1x

OLSON TECHNOLOGY LASER LITE

1550nm OPTICAL AMPLIFIER

INSTRUCTION MANUAL

Page 2 of 8

TABLE OF CONTENTS

SAFETY WARNINGS Page 3

SPECIFICATIONS Page 4

INTRODUCTION Page 5

INSTALLATION Page 6

TROUBLE SHOOTING Page 8

025-000519 REV x1

Page 3 of 8

SAFETY WARNINGS

LASER RADIATION

NEVER USE ANY OPTICAL INSTRUMENT TO VIEW THE OUTPUT OF THE LASER

TRANSMITTER. “OPTICAL INSTRUMENT” INCLUDES MAGNIFYING GLASSES, OPTI-

CAL FIBER SCOPES, ETC.

NEVER LOOK INTO THE OUTPUT OF THE LASER TRANSMITTER

NEVER LOOK INTO THE OUTPUT OFA FIBER CONNECTED TO A LASER TRANSMIT-

TER.

NEVER LOOK INTO OR USE ANY OPTICAL INSTRUMENT TO VIEW THE DISTANT

END OFA FIBER THAT MAY BE CONNECTED DIRECTLY OR VIAAN OPTICAL SPLIT,

TOATRANSMITTER THAT MAY BE OPERATING. THIS SPECIFICALLY APPLIES TO

FIBERS THATARE TO BE CONNECTED TO OPTICAL RECEIVERS OR OTHER DEVICES

AT ANY DISTANCE FROM THE LASER TRANSMITTER.

The OTEA-CO-Bxx-x1x optical amplifier emits invisible laser radiation

that can cause permanent eye damage. AVOID DIRECT EXPO-

SURE TO BEAM. Operate the transmitter only with the proper optical

fiber installed in the optical connector. The “Pump” switch on the front of

025-000519 REV x1

SHOCK HAZARD

The OTEA-CO-Bxx-x1x is designed for indoor use only. Direct exposure to moisture must be avoided.

the OTEA should be turned to the off position whenever the optical connector cover is opened and there is no

installed fiber (as when the fiber connector is being installed or removed from the transmitter connector).

Page 4 of 8025-000519 REV x1

SPECIFICATIONS (Forward Optical Receivers)

OPTICAL PARAMETERS:

Wavelength 1540 nm to 1560 nm

Gain flatness for CWDM/DWDM < +/- 0.5 dB

Noise Figure 5.0 dB (typical); @ 0dBm Input

Isolation > 30 dB

Optical Input Range -2 dBm to +10 dBm

Optical Input Power (typical) 0 dBm

Composite/Saturated Output Power * 40 mW / 16 dBm (@ 0 dBm input) for 1-port model

(for C-Band single channel application) * 80 mW / 19 dBm (@ 0 dBm input) for 2-port model

* 200 mW / 23 dBm (@ 0 dBm input) for 4-port model

Per Port Optical Output Power * 40 mW / 16 dBm (1, 2 or 4 ports, as applicable)

ELECTRICAL, ENVIRONMENTAL& MECHANICALPARAMETERS:

Dimensions 1.75" H x 19.0" W x 9.0" D

Weight 12.1 lb. (5.5 kg)

Operating Temperature Range 0 degrees C to +50 degrees C (+32 to +122 degrees F)

(Air temperature measured at air inlet of Model OTEA-x EDFA)

Humidity Range to 90% non-condensing

(Recommended for use only in non-condensing environments)

AC Input Range 100-240 VAC (@ 47-63 Hz)

DC Input Range (optional) -48 VDC

EDFA INTERFACES:

Optical Connectors SC/APC standard; FC/APC optional

LED Indicators (Green/Red) Alarms: Pump Temperature; Pump Bias Current;

Input Power; Output Power

Unit Operating Parameters RS232 interface

Pump Enable/Disable Key Switch

ORDERING INFORMATION:

Model Number Description

OTEA-CO-B16-116 EDFA; 1RU single channel Booster; (1x) 16dBm/40mW; 100-240VAC

OTEA-CO-B19-216 EDFA; 1RU single channel Booster; (2x) 16dBm/40mW; 100-240VAC

OTEA-CO-B23-416 EDFA; 1RU single channel Booster; (4x) 16dBm/40mW; 100-240VAC

* (In CATV applications, no more than 40 mW/16 dBm launch level per fiber

should be planned to avoid excessive Stimulated Brillouin Scattering (SBS)

in the connected fiber. SBS can negatively impact link CNR and CSO

performance. For example, the Model OTEACO-B23-416 Quad output EDFA

utilizes an integrated low insertion loss 1x4 optical splitter, which reduces

the overall 200mW/23dBm overall output power by 7dB per port, producing

the maximum achievable fiber launch level of 16 dBm per fiber, out of each of

the output ports).

Page 5 of 8025-000519 REV x1

INTRODUCTION

The Olson Technology, Inc. Model OTEA-CO-Bxx-x1x One-, Two- or Four-Output 1550nm Erbium

Doped Fiber Amplifier is a 1RU rack mount EDFA package containing up to four (4) identical 16dBm

optical outputs. It is engineered to meet the requirements for a high-density solution for the large-scale

distribution of broadband CATV video (and/or wideband L-Band video) & data signals to traditional

CATV HFC nodes in the field or to video overlay receivers in a FTTH/FTTP or PON system.

The EDFA is made up of two main parts. The Fiber Gain Module in the EDFA is the core of the EDFA responsible

for amplifying the 1550nm optical signal that is run through it. The External Control System is allows the user to

monitor the states of the gain module, such as pump power, pump temperature, pump current, input and output

power, and adjust all the parameters to ensure a stabilized output power of the gain module. This system is also

responsible for the front panel status alarms. Detailed working parameters of the EDFAare shown by the LCD on

the front panel. This information can also be accessed via RS232 interface by an external computer.

Structure Diagram of the EDFA:

Front Panel

Rear Panel

Page 6 of 8025-000519 REV x1

INSTILLATION

1. Connections:

Begin by being sure that the EDFA’s power switch and pump key are both in the off position. Connect the

supplied EIA power cable from the rear of the unit to a 110/220VAC @ 50/60Hz outlet.

Connect the fiber optic patch cords to the optical input and output of the EDFA.

2. Turning the EDFA on and off:

First turn on the power switch (on the rear panel), the LCD and LED’s will come on. The “Pump Status”

and “Output Power” LED’s will both be red. The “Pump” key may now be turned to the ON position. The

“Pump Status” and “Output Power” LED’s should now turn green. Once the input and output power levels

have been verified, setup is done.

To turn off the EDFA, first turn the “Pump” key to the OFF position, after a few moments, the power switch

located on the rear panel may be switched to the OFF position.

3. LED Indicators:

POWER: Shows green when power in on.

PUMP STATUS: Shows green when pump is working properly, and red when it is not functioning or

incorrectly setup. The pump will shutdown if the optical input power is less then -2dBm, pump temperature

goes over 35C, or the pump current exceeds its limit value.

INPUT POWER: Shows green when the optical input power is in the correct range (-2dBm to +10dBm)

and will show red when the optical input power is below -2 dBm.

OUTPUT POWER: Shows red when the optical output power is 2dBm less then the rated output power,

otherwise shows green.

OVER TEMP: Shows green when pump temperature is below 35C, otherwise shows red. It will flash

green if the fan stops functioning and will flash red when the pump TEC (thermoelectric cooler) current is

higher then 1.3A.

REMOTE: Remote control will show green when the amplifier is connected with a computer through the

RS-232 interface.

Page 7 of 8025-000519 REV x1

4. LCD Display:

The LCD screen on the front panel is to show detailed information of the EDFA. Press the blue key to cycle through

these parameters.

Content display:

It displays the model number

Input Power

Output Power

Pump 1 Temperature

Pump 2 Temperature

Pump 1 Bias Current

Pump 1 Limit Current

Pump 2 Bias Current

Pump 2 Limit Current

Pump 1 TEC Current

Pump 2 TEC Current

Page 8 of 8025-000519 REV x1

TROUBLESHOOTING

When the EDFAis functioning correctly, the first five LED’s on the front panel should all show green, and the last

two will not be lit. If any of the LED’s turn red, it indicates that system has gone into alarm. In this case, be consult

the following:

1: Be sure the Pump Key is in the ON position.

2: Be sure the optical input power is in the correct range (-2dBm to +10dBm). The INPUT STATUS LED will be

red if the optical input power is below -2 dBm.

3: The ambient operating temperature range for the EDFA is 0-50C. If the ambient temperature goes to high it will

cause the TEC (thermoelectric cooler) inside the EDFA to exceed its current limit. This will cause the OVERTEMP

LED to turn red. If the pump temperature exceeds 35C, the pump will shut down automatically. If this happens the

PUMP STATUS LED will turn red.

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