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1550nm External Modulated Optical Transmitter

WS-WT1500 series external modulated optical transmitter can be widely used in all kinds of medium and long distance digital and analog signal communication, the CATV RF signal will be modulate to 1550nm optical signal through this transmitter, the signal transmission is long. The application scene includes large and medium-sized cable TV. Trunk and distribution network, CWDM/DWDM system, optical fiber sensing and security monitoring system. 


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● Using 32-bit high-performance ARM processor, together with a complete automatic monitoring system circuit, ensure a stable optical output power and ensure that the laser is in the best working environment.

● A good modulator servo system and a unique “wind pendulum” mode of operation of the modulator phase tracking system provide a more accurate and delicate control process.

● Using a microwave source programmed and controlled by the CPU, the frequency and amplitude of the signal can be dynamically adjusted to generate microwave signals of any frequency and amplitude with less harmonics. The SBS threshold range is 13-19dBm.

● External modulation technology has no ripple effect, very low dispersion distortion, and has good characteristics in the band. The working bandwidth is 47~1000MHz.

● RF digital signal predistortion system can precisely match the predistortion amount according to the signal strength and modulation amplitude to ensure the signal quality.

● LiNBo3 external modulators perform signal modulation to ensure improved optical power into the fiber and increase transmission distance when the system COS performance index is excellent.

● The RF gain is selectable in AGC/MGC mode and the OMI±7dB range is adjustable.

● Blue and white 144*32-point LCD display on the front panel, which can accurately display all working parameters and fault information of the equipment.

● Hot-swappable dual power supply, CPU assignable power, 48V or 220V optional.

 

 

 

 

 

 


Item

Parameters

Wavelength

1540-1563nm Fixed wavelength

 Transmission distance

50km(analog)75km(digital)

100km(analog)150km(digital)

Laser line-width

≤2nm

Edge mode rejection ratio

≥45 dB

Output power

1*5dbm,1*9dBm

2*5dbm,2*7dbm,2*9dBm

Output number

2

Optical connection

FC/APC, SC/APC

Radio frequency AGC control range

10dB

Radio frequency range

47-862/1000MHz

Flatness

≤0.75

RF input signal level

78-90dBuV

RF input impedance

75Ω

RF input reflection loss

≥16dB

CNR

≥53dB

CTB

≥65dB

CSO

≥65dB

SBS Value

13~16dBm (continuously tunable)

13~19dBm (continuously tunable)

Network management interface

RJ45

Supply voltage

AC220V(160V ~ 265V) /

AC110V(90 ~130V)/

DC48V (38~58V)

Working temperature

-5℃~+65℃

Relative humidity

Max 95%, no condensation

Size

483×410×44mm

Packaging size

625×625×160nm(1 set)

Gross Weight

10kgs(1 set)


Principle Diagram 

CATV 1550nm Externally Modulated Optical Transmitter


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