CATV 1550nm Direct Modulated Optical Transmitter (WT- 1550 -DM)

Product Description

Product Description
WT-1550-DM intelligent directly modulated optical transmitter is mainly used in 1550nm optical fiber transmission system. Adopt advanced electronic dispersion compensation technology, accurately compensate according to the actual transmission distance by 1km stepping. The maximum compensated distance up to 50km.

WT-1550-DM intelligent directly modulated optical transmitter is the most important equipment to construct the CATV network. It mainly used for the value-
Added services of TV image signal, digital television signal, telephone voice signal and data (or compressed data) signal. By built-in WDM, multiplex the inter-cut optical signal and the main optical signal then output. After setting required optical difference, the perfect adjustable optical attenuation function can automatic control the inserted optical signal according to the main optical signal, realize inter-cut system full automatic adjustment. Provide high quality low cost solution for all-optical relay 1550 optical fiber CATV system, and local value-added services inter-cut.

Characteristics:
1. Patent pre-distortion circuit.
2. The optical fiber distance is adjustable according to the actual use condition by 1km stepping
3. WT-1550-DMII: Built-in WDM, multiplex the inserted optical signal and the main optical signal then output.
4. WT-1550-DM III: Built-in WDM and adjustable ATT.

Item	Unit	Technique Parameters
Output optical power	mW	10
Optical wavelength	nm	1550±10 (have to be ITU wavelength when with inter-cut function)
Dispersion compensation distance	Km	≤50
Laser type		DFB laser
Optical modulation mode		Direct optical intensity modulation
Optical connector type		FC/APC or SC/APC
Frequency range	MHz	47-862/1003
RF input level	dBuV	75-85
Flatness in band	dB	±0.75
RF input impedance	Ω	75
Input return loss	dB	≥ 16
C/CSO	dB	≥ 60	25Km optical fiber, 0dB received
C/CTB	dB	≥ 65
C/N	dB	≥ 51
AGC control range	dB	±5
MGC control range	dB	0-20
Supply voltage	V	AC 110V-250V (50Hz)
Consumption	W	30
Operating temperature	º C	0 -- 45
Storage temperature	º C	-20 -- +65
Relative humidity	%	Max 95% no condensation
Dimension	mm	483(L)×380(W)×44(H)