12GHz带宽光收发机

LTR-12-R系列宽带激光收发机为高线性光学联系而设计，RF over fiber收发机信号达到15GHz。

基于我们的专利设计，LTR-12-R包含宽带光发射机和线性接收机，成为一个紧凑的机架式单元。LTR-12-R能够用于携载几乎任何类型的RF调制信号，包括RF over Fiber、卫星/IF联系、WIMax光学联系、microwave over fiber和光纤移动信号。使用一个铌酸锂外调制器，LTR-12-R发射口线性地转换输入微波/RF信号到光波，频率范围10MHz到15GHz。使用宽带线性PIN接收器，LTR-12-R接收口转换光波返回到RF/微波信号，带有小的畸变。LTR-12-R在宽的频率范围(± 2.5 dB over 1-12 GHz)保持极好的增益平坦性。使用很窄线宽的DFB激光器，在标准的SMF-28光纤中LTR-12-R能够传输达到120km。

应用

RF Transmission over Fiber (RFoG)

WiMax 光连接

Microwave over Fiber

光纤移动信号

卫星通讯

特征

可用宽带达到 15 GHz

    高线性模拟传输

低RIN、窄线宽的 DFB 激光器

宽带LiNbO3 调制器

具有TIA的线性 PIN 接收器

选择信号口设计容许用一根光纤双向传输

可选择RF放大器增强增益

Feature Name	Description
Transmitter General Specifications
Operating Wavelength	1550 nm ± 10 nm, ITU wavelength available
Optical Output Level	+4 dBm, +8 dBm, +15 dBm (w/ Internal EDFA)
Optical Return Loss	50 dB typ.
Linewidth (FWHM)	1 MHz max.
DFB Side Mode Suppression Ratio	50 dB typ.
Relative Intensity Noise (RIN)	-145 dB/Hz max.
Impedance	50 Ω
Frequency Response Flatness	±0.5 dB in any 1GHz bandwidth
VSWR	2.0 : 1 max.
Input Damage Level	25 dBm max.
Receiver Optical Specifications
Operating Wavelength	1250 nm to 1650 nm
Optical Input Level	+3 dBm max.
Repsonsitivity	0.85 A/W @ 1550 nm typ.
Trans-Impedance Gain	500 typ.
Group Delay	±7.0 ps
Optical Return Loss	-30.00 dB typ.
2nd Harmonics Distortion	-70.0 dBc max.
3rd Harmonics Distortion	-75.0 dBc max.
Optical PDL @ 1550 nm	0.05 dB typ., 0.1dB max.
Receiver Electrical Specifications
Useful Bandwidth	0.005 GHz to 15 GHz
S21 3 dB Bandwidth	11 GHz min., 12 GHz typ.
S22 Characteristics	< -10 dB to 10 GHz typ.
Output Coupling	AC Coupled
RF Impedence	50 Ω
Ripple over Bandwidth	±1.0 dB
Sensitivity	-19 dBm
Analog Specifications
Useful Bandwidth	0.01 to 15 GHz
1 dB comp. Level	+20 dBm typ.
Input IP3	26 dBm @ 10 GHz
2nd Harmonics Distortion	-70 dBc typ.
RF Link Gain @ 2 GHz*	-18 dB
RF Link Gain @ 12 GHz**	-23 dB
IM3 Distortion	< -90 dBc max.
	*0 dBm Optical Input
	**5 mW Optical Input
Digital Specifications
Modulation Bandwidth	Up to 20 Gb/s
Data Format	NR, RZ
Drive Voltage Requirement	7.5 V p-p
Mechanical Specification
Operating Temperature	0° C to +50° C
Storage Temperature	-10° C to +70° C
Power Supply Requirements	80 – 240 V, 43 – 63 Hz AC
Power Consumption	110 W max.
Optical Connector	Two SC/APC for Tx and Rx standard; Optional single connector for bi-direction
RF Input Connector	SMA Female
Control/Monitoring	DFB Laser Temperature and Current
Display	Output Power Level, Tec Temperature
Local Alarm	Over Temperature , Over Current
Dimensions	1U: 19” x 14” x 1.75”
Housing	Precision Machined Aluminum, Anodized

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