Optical Transmitter for CATV 2*10mw SBS Tunable 1550nm External Modulated

The optical transmitter is designed for analog CATV system, it has highest cost performance in CATV long haul, Large distribution networks. Nonlinear effect, especial CSO, in analog LiNbO3 modulation is ensured by unique Auto Bias Control circuit (ABC), employing PLL tracking. Employing chirp effect to co-operate SPM effect to suppress SBS, make the contradiction of SBS with dispersion get to minimum，and the threshold of SBS can up to 20dBm. Excellent flatness, return loss, etc, is given by exact match on RF circuit. And, professional pre-distortion circuit for LiNbO3 modulator make the best CTB. Better stability and shorter MTTR is brought by redundancy hot swap power designing. It has been Excellent Network management performance by SNMP and Telnet.

Features

●Excellent Transmission performance index: CNR>52dB, CSO>65dB, CTB>65dB
●Standard 45MHz～1005MHz bandwidth, compatible with digital TV
●Unique CSO Auto adjust circuit, CTB pre-distortion circuit
●Perfect SBS Control: Chirp and SPM both
●Unique technology balance the contradiction between SBS threshold and dispersion
●Long distance transmission up to 140km
●Flexible for networking: SBS 13dBm~20dBm can be adjusted
●Perfect network interface: Support SNMP and Telnet
●Wide range RF control technique: AGC , MGC is optional
●Used for DWDM system and dispersion compensation
●ITU-T wavelength is optional and adjustable
●Dual power supply

Applications

1. FTTH
2. Video Optical transmission
3. Analog, Digital CATV Long-haul system
4. CATV Large distribution networks

Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit
Wavelength	λc	1545	1550	1562	nm
SMSR	SMS	30	------	------	dB
Output Power	Poi	5*2	7*2	18	dBm
RIN	RNF	----------	-160	-155	dBc/Hz
Return Loss	RL	-------	-------	-45	dB
Output power stability	ΔPo	-----	±0.05	±0.1	dB
CNR	CNR	52	----	----	dB
CTO	CTO	65	----	----	dB
CTB	CTB	65	----	----	dB
Flatness	Fl	----	----	±0.75	dB
SBS	SBS	13	----	20	dBm

Electric Characteristics

Parameter	Min	Typ	Max	Unit
Frequency	45	---------	1000	MHz
RF Input Level	80	85	90	dBuV
RF Input Impedance	----	75	----	Ω
RF Input Return Loss	14	---------	---------	dB

Environmental Characteristics

Parameter	Symbol	Min	Typ	Max	Unit
OperatingTemperature	Tw	-5	-----	60	℃
Storage Temperature	Ts	-40	-----	80	℃
Humidity	------	10	------	85	%

(3): No condensation

Mechanical Dimension

size: 436*369.7*44(mm)

Order Information

Category	Structure	Application	Out put power	SBSThreshold	Voltage1	Voltage 2	Interface	SNMP
OTE: Optical Transmitter External	19：1U OTE rack	1：CATV	5：5dBm2 7：7dBm2 9：9dBm*2	13：13dBm … 20：20dBm	1:110VAC 2:220VAC 3:110~220VAC 4:-48VDC 9:other	1:110VAC 2:220VAC 3:110~220VAC 4:-48VDC 9:other	2:SC/APC 4:FC/APC 6:LC/APC 9:other	0：W/O 1：W/