The LT-25-M is a 25 GHz bandwidth lightwave transmitter module designed for RF over fiber, antenna remoting and broadband RF transmission applications using single mode optical fiber.
詳細(xì)介紹
產(chǎn) 品 說 明
25GHz帶寬光發(fā)射機(jī)模塊
The LT-25-M is a 25 GHz bandwidth lightwave transmitter module designed for RF over fiber, antenna remoting and broadband RF transmission applications using single mode optical fiber. This module uses a low noise, narrow linewidth, 1550nm distributed feedback （DFB） laser diode as Continuous Wave （CW） light source. A broadband Lithium Niobate （LiNbO3） optical modulator is employed to provide the linear modulation capability that has a modulation bandwidth of up to 30 GHz. This externally modulated transmitter design provides a high spur-free dynamic range and high input intercept point performances. The LT-25-M can also be used for digital transmission when driven by a wideband modulator driver.
The DFB laser’s temperature stability is controlled with the use of an internal TEC. The optical modulator is controlled via a high precision bias controller to ensure the operation is set to quadrature. This design enables LT-20-M to provide with the lowest distortion and wide modulation bandwidth. The transmitter provides status monitoring through an RS-232 serial port interface.
Features:
• Useful Bandwidth up to 30 GHz
• Highly Linear for Analog Transmission
• High Spur-Free Dynamic Range
• Low RIN, Narrow Linewidth DFB Laser
• Broadband LiNbO3 Modulator
• Status Monitoring: RS-232 （standard）
• RS-232 interface for status monitoringg
Applications:
• Optical Communication to 30 Gb/s
• Wideband RF Transmission over Fiber
• RF/IF Signal Distribution
• Antenna Remoting
• Optical Delay Lines
• Salite Communication
Technical Specifications
Model Number
LT-25-M
Optical Specifications
Laser Wavelength Range
1550 nm ± 10 nm, ITU wavelength available
Transmission Distance Range
N/A
Optical Output Power Level
+4 dBm to +8 dBm
Output Power Stability
N/A
Laser Launch Power Level
N/A
Optical Return Loss
50 dB typ.
Optical Connectors
SC/APC, FC/APC Optional
Receiver Input Wavelength Range
N/A
Optical Input Level Range
N/A
RF/Link Specifications
N/A
Input RF Power Level
N/A
RF Output Level
N/A
Link Gain
RF Link Gain @ 2 GHz, -24 dB; RF Link Gain @ 20 GHz, -28 dB; RF Link Gain @ 25 GHz, -31 dB
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