1310nm Transmitter,use ORTEL DFB Laser and AGC adjustment,

1310nm Transmitter,ORTEL DFB Laser,AGC. This series transmitter take the high linearity, the low noise of the distribution feedback laser (the DFB laser ),it greatly in transmittion,low in non-linearity distortion. Adopt APC, ATC technology, achieved the transmitter output optical powers stability. It offers AGC/MGC level adjustment functions.Under the AGC status,when the input RF signal changes in allowable range(��5dBmV). Add to lasers modulation level basicly invariable.In order to keep the system of CNR, CTB and CSO three big targets for a long-term stability .

Within the aircraft DFB lasers all operational parameter such as optical power,bias current,LD temperature,cooling current,power supply current and voltage are all under microcomputers control. At the same time the front panels LCD screen display in time. Once operational parameter and status deviate the fixed scope, it will send the warning signal; and will protect the circuit if it serious. LCD screen demonstration breakdown reason.

important technology data:

PARAMETER INDEX
Optical Parameter Optical power(mW) 425
Optical Wavelength (nm) 1310��20
Optical Fiber Connector FC/APC(SC/APC)
RF Parameter Bandwidth (MHz) 45862
RF Input Level(dB��V) 80��5
Belt-inFlatness (dB) ?��0.75dB
RF Input Impedance (��) 75
RF Input Return Loss (dB) ?16

Link feature
CNR(dB) 52
CTB(dB) -68
CSO(dB) -63
Test conditons: input PAL-D of 59 channel,tested optical transmitter input RF is 80dB��V,optic road is standard optic receiver,10Km fiber add up fiber variable attenuator,the input optic power of test receiver is-1dBm.
AGC Control Input level change 10dB��V,Output change ��1dB��V
When the channels number ?15,choose MGC status work only
Others Power Consumption(W) 24
Supply power (VAC) 110--265
Operating Temperature () 0--45
Storage temperature () -25��C65��C
Size(mm) 483x385x44(19"x15"x1.75")