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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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