Cisco Laser Link 1310 nm Transmitters Datenbogen
Description
The Laser Link
®
Modular 1550 nm Optical Transmitters are part of an
advanced transmission system designed to optimize network architectures and
increase reliability, scalability, and cost effectiveness.
The Laser Link 1550 nm Transmitter Family includes the Externally Modulated
Transmitter (LEMT), Narrowcast Transmitter (LLNT), and Narrowcast Return
Transmitter (LLNTR). These 1550 nm transmitters are designed to operate
over a wide range of optical output powers and loss budgets, delivering both
analog and digital signals.
The 1550 nm LEMT applications include supertrunking, hub interconnects,
broadcast transmission portion of DWDM architecture and 1310/1550 nm
overlays. The LLNT converts input RF narrowcast signal in the 50-870 MHz
frequency range to an optical output with a discrete ITU grid wavelength.
Multiple outputs of LLNT products (20 currently) may then be transmitted over
a single fiber through utilization of wave division multiplexing. The LLNTR
converts RF signal inputs in the 5-210 MHz frequency range to an optical
output with a discrete ITU grid wavelength. LLNTR outputs of differing
wavelengths may then be combined for amplification and transport over a DWDM
system.
increase reliability, scalability, and cost effectiveness.
The Laser Link 1550 nm Transmitter Family includes the Externally Modulated
Transmitter (LEMT), Narrowcast Transmitter (LLNT), and Narrowcast Return
Transmitter (LLNTR). These 1550 nm transmitters are designed to operate
over a wide range of optical output powers and loss budgets, delivering both
analog and digital signals.
The 1550 nm LEMT applications include supertrunking, hub interconnects,
broadcast transmission portion of DWDM architecture and 1310/1550 nm
overlays. The LLNT converts input RF narrowcast signal in the 50-870 MHz
frequency range to an optical output with a discrete ITU grid wavelength.
Multiple outputs of LLNT products (20 currently) may then be transmitted over
a single fiber through utilization of wave division multiplexing. The LLNTR
converts RF signal inputs in the 5-210 MHz frequency range to an optical
output with a discrete ITU grid wavelength. LLNTR outputs of differing
wavelengths may then be combined for amplification and transport over a DWDM
system.
Common Features
• Full-width modules; seven transmitters in a 5 RU chassis
• User adjustable RF input drive power and RF input test point
• Multiple primary/redundant powering options
• Simple implementation and operation
• Excellent
link
performance
• Allows for simple optimization and configuration
• Network management (status monitoring) ready
• Front panel fiber interface
LEMT Features
• Dual +10 dBm outputs
• Outstanding
Stimulated
Brillouin Scattering (SBS) suppression
• Front panel LCD and status LEDs indicate module condition and simplify troubleshooting
• Low RIN source Laser
• Automatic gain control (AGC) available
• 870 MHz input bandwidth
LLNT/LLNTR Features
• Cost-effective targeted service solution
• Directly modulated DFB laser sources
• Front panel optical test points
• Wavelength on ITU grid
• Front panel LEDs indicate module condition and simplify troubleshooting
Optoelectronics
Laser Link
®
Modular 1550 nm Transmitters
LEMT Transmitter
LLNT Narrowcast Transmitter
LLNTR Narrowcast Return
Transmitter