High-performance DFB laser 1310nm CATV transmitter

A.DFB laser B.advanced pre-distortion correction circuit C.RF pre-amplifier circuit D.high reliability of power supply

  

Features

1.45~870MHz bandwidth;

2.High-performance DFB laser to increase the signal quality in HFC; 

3.Low noise, low distortion and pre-AMP to meet low RF input signal;

4.Incorporating circuit design built with RF AMP and pre-distortion correction, enhance equipment distortion specification;

5.Elective AGC (Automatic Gain Control) of amplitude variable and field MGC (Manual    Gain Control) enables superior link optimization and variable modulation depth (RF drive level)

6.Effective RF overdrive protection for LD alarm and automatic LD shutdown;

7.Effective ATC(Automatic Temperature Control) and APC(Automatic Power Control) enable precise optical power levels;

8.LCD display operation state and it's information; 

9. Front panel -20dB RF test port;

10.Alarm for over operation ,low optical power output and communication

11.Advanced high efficiency switching power supply to meet the AC voltage wide fluctuating (176V-264V); redundant switch power supply and automatic alternation;

12.Reliable thermal structure design to ensure high stability and long operating life of the equipment.

Parameter

	Item	Unit	Specification
1	Type of laser		DFB
2	Wavelength	nm	1310±20
3	Modulation mode		Direct Light Intensity Modulation
4	Output Optical Power	mw	4 8 10 12 14 16 18 20 22 24 26
5	Fiber Connector		FC/APC SC/APC
6	Frequency Range	MHz	45~860
7	Input RF Signal Level	dBmv	15~35
8	AGC range	dB	0~10   (MGC: 0~20dB)
9	CNR	dB	≥51           note
10	CTB	dB	≤-68          note
11	CSO	dB	≤-62          note
12	Flatness	dB	±0.75
13	RF Input Impedance	Ω	75
14	RF Input Return Loss	dB	≤-15
15	APC Control Precision	dB	≤±0.2
16	ATC Control Precision	°C	25±2
17	Max TEC Operating current	mA	DC+5V@850
18	MTBF	h	≥40000
19	Laser Operating Voltage Range	V	DC±4.5--±5.5
20	Laser Operating Temperature Range	°C	+5~+40
21	Overall Storage Temperature Range	°C	-25~55
22	Overall Relative Humidity	%	40~70
23	Overall Power Supply Input (with Filter)	V	AC220(176~264V)
24	Power Dissipation	W	15
25	Dimensions(WxDxH)	mm	480x310x45
26	Weight	Kg	3

High-performance DFB laser 1310nm CATV transmitter