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  • 1550nm Directly Modulated Transmitter : WT-1550-DM

1550nm Directly Modulated Transmitter : WT-1550-DM

WT-1550-DM


WT-1550-DM intelligent directly modulated optical transmitters adopt advanced Electronic Dispersion Compensation technology, accurately compensate according to the actual transmission distance by 1km stepping. The maximum compensation distance is up to 50km and high isolation between two RF inputs.

Product overview


● 1.2GHz band, supporting docsis3.1 standard.
● The gain control modes of AGC and MGC are optional.
● Two channel input, isolation up to 50dB, can achieve high quality RF plug-in function
● Dual power hot backup, multiple power supply modes are optional.
● Real time detection of laser output power, bias current and cooling current.
● Dual power hot backup, AC220V, DC48V optional.
● CWDM can be selected to realize optical plug-in
● Electronic dispersion compensation can support 50km transmission distance
● The low cost solution is comparable to the external performance
● Optional ITU standard wavelength


Model Description

WT-1550-DM-I

  Standard type, supporting electric disperison compensation

WT-1550-DM-II

Standard type + WDM

WT-1550-DM-III

Standard type + VOA(Electrical variable optical attenuator)

WT-1550-DM-IV

Standard type + WDM + VOA



Parameter

Item

Unit

Parameter

Optical part

Optical wavelength

nm

ITU wavelength

Laser type

 

Butterfly-typed DFB laser

Optical modulation mode

 

Direct optical intensity modulation

Optical connector type

 

FC/APC or SC/APC

Output optical power

mW

10

The insertion loss of the VOA and CWDM is excluded.

External optical signal input

dBm

-5～10

RF part

Frequency range

MHz

47～870/1003/1218

RF input level

dBuV

77± 5

Flatness in band

dB

± 0.75

Input return loss

dB

≥ 16

RF AGC control range

dB

±5

RF MGC adjustable range

dB

0～20

RF input isolation

dB

≥ 50

Isolation between two RF inputs

RF input test port

dB

-20±1

Laser drive level test port

dB

-20±1

Electronically controlled optical attenuator tolerance

dB

≤1: ATT 0-15dB

≤3: ATT 16-20dB

CNR

dB

≥ 48

550MHz 59CH analog signal 77dBuV/CH      

550-870MHz 40CH digital signal 67dBuV/CH

25 Km, -1dBm input

C/CSO

dB

≥ 58

C/CTB

dB

≥ 63

CNR

dB

≥ 46

550MHz 59CH analog signal 77dBuV/CH      

550-870MHz 40CH digital signal 67dBuV/CH

50Km, -1dBm input

C/CSO

dB

≥ 55

C/CTB

dB

≥ 63

MER

dB

≥ 40

25 Km, -1dBm input, 96CH digital 77dBuV/CH

≥ 39

50 Km, -1dBm input, 96CH digital 77dBuV/CH

Others

Maximum power consumption

W

≤15

Operating temperature

℃

-5 ～ + 55

Storage temperature

℃

-30 ～ + 70

Weight

Kg

5.5


Size chart
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