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ViaLite RF over fiber links are used in the satellite industry to transport satellite signals between the antennas and Network Operations Center (NOC). The links can be operated in both the uplink and downlink paths and are typically L-Band HTS, IF 70-140 MHz and C-Band. Additionally, S-Band is used for satellite telemetry and 10 MHz satcom timing and reference links are used for connectivity to LNAs, LNBs and BUC devices.
The RF over fiber process modulates the RF electrical signal onto light using a laser source. The light then travels down the fiber to the receiver where it is converted back to an RF electrical signal by means of a photo diode. Using RF over fiber considerably extends the distance signals can travel compared to coaxial cables.
ViaLite is a market leader in satcom RF over fiber equipment and is used by eight of the top ten teleport operators.
The receive chain
This typically has an LNB or an LNA coupled to a down convertor to take the satellite signal from C, X, Ku or Ka-band down to either L-Band HTS or IF 70/140 MHz. The signal is then transported across the fiber to the Network Operations Center (NOC) where it is changed back to an electrical RF signal and sent to a switch matrix or straight to a demodulator.
The uplink chain
Typically the signal comes from the modulator in an L-Band HTS or IF 70/140 MHz frequency range and is then converted to light to go across the site to an up-converter or a BUC which takes the L-Band signal and converts and amplifies it, before transmission to the satellite at C, X, Ku or Ka-Band.
Satcom solutions
- Uplink and downlink for fixed earth stations / teleports
- Oil and gas platforms
- VSAT hubs (IP gateways)
- Long distance links for rain fade and diversity applications
Other typical Satcom sectors
- Broadcast facilities
- Broadcast-satcom applications such as mobile SNG
- Military and flyaways
- Marine antennas
- Telemetry, Tracking and Command (TT&C)
Products
L-Band HTS 700-2450 MHz
The L-Band HTS link (700-2450 MHz) covers distances of 1m to 50 km and is the most commonly used RF over fiber link in Satellite Communications…
L-Band HTS 400-2500 MHz - HWDR
The ViaLiteHD L-Band HTS Hyper Wide Dynamic Range (HWDR) links have been designed for those needing an even greater dynamic range.
Long Distance DWDM Link System
The ViaLiteHD Long Distance DWDM Link System (L-Band HTS 700-2450 MHz) is designed to connect distances up to and over 100km.
Rain Fade Diversity Link System
Many of the new High Throughput Satellites (HTS) operate at Ka-Band which is very susceptible to weather conditions. ViaLite‘s Rain Fade…
6 GHz Link
The ViaLiteHD 6 GHz Link covers 10 MHz to 6 GHz, providing tri-band coverage of L-Band (700-2450 MHz), S-Band (2200-2400 MHz) and C-Band (3.4 – 7.1 GHz).
Erbium-Doped Fiber Amplifiers (EDFA)
The ViaLiteHD Eribium Doped Fiber Amplifier (EDFA) is available in a single or multi-channel format depending on where it is utilized in the system.
Optical Switch
The Optical Switch has been designed for fast switching between local and remote locations in Ka-Band satcom diverse antenna applications.
19” Rack Optical Delay Line
The Optical Delay Line is offered as part of a DWDM L-Band diversity antenna system and is utilized when time-balancing between sites is required.
Dispersion Compensation Module (DCM)
A DCM/Dispersion Compensation Fiber (DCF) provides fixed chromatic dispersion compensation for diverse and disaster recovery DWDM networks.
System Designer Tool
ViaLite’s System Designer tool has been developed to assist users with the design of complex RF over fiber Satcom systems, using multiple DWDM products.
ViaLite VSAT Package
The ViaLite VSAT Package is a turnkey RF over fiber system tailored for smaller spaces and VSAT applications. It incorporates an ODE-A4 enclosure…
ViaLite Quad LNB Package
The Quad LNB Package is typically used by the Government (for receive-only applications), by the Satcom and Telemetry markets, or...
L-Band HTS & Reference
The L-Band HTS and Reference link is designed for applications where remote equipment shares a common frequency reference (typically 10 MHz) however…
Blue2 Link 2 kHz-4.2 GHz
ViaLite‘s RF over fiber Blue2 Link is a dual-solution OEM which can be setup as 2x transmitters, 2x receivers or a transceiver, as required.
Connection Kits
ViaLite offers four different Connection Kits for Blue OEM Links and Blue2 Links. These kits can be used to easily integrate ViaLite links with customer equipment.
Satellite IF 70/140 MHz
ViaLite’s Satellite Intermediary Frequency (IF) RF over fiber links cover the 20-200 MHz bandwidth range; providing cross-site connectivity…
Satcom Timing & Reference
The Satcom Timing and Reference link is designed to be used when a central timing or modem-produced reference signal of 1 to 50 MHz (typically 10 MHz)…
10 MHz RF Splitters
The ViaLiteHD 10 MHz RF Splitters have been designed to distribute a single 10 MHz frequency reference to multiple devices.
L-Band 10 MHz Diplexer
The new ViaLiteHD L-Band 10 MHz RF Diplexer has been designed to distribute a single 10 MHz reference frequency to all L-Band paths on the unit. With low…
Wideband 10 MHz-3 GHz
The Wideband link has a 10 MHz-3 GHz bandwidth. It can be used to connect satellite antennas with control rooms, network operation centers or broadcast…
Ultra Wideband 2 kHz-4.2 GHz
ViaLite‘s Ultra Wideband link provides 2 kHz-4.2 GHz bandwidth, which is ideal for C-band downlink and S-band for Telemetry, Tracking and Command…
GPS Link
The GPS fiber optic link allows for timing distribution and accurate synchronization using GPS-derived timing signals. The links are a reliable method…
ViaLite GPS Packages
The GPS Package is designed for bringing GPS/GNSS signals into buildings for time servers, base stations, test equipment or rebroadcasting.
Local Integrated GPS Splitter
The ViaLiteHD GPS Splitter is designed to minimize rack space. The chassis is available with 1-4 RF over fiber receivers with 8-32 outputs, depending…
Multizone Lossless Splitter
The Multizone Distribution Lossless Splitter allows for multiple receive points to be supplied by one transmitter with zero optical loss.
Monitoring & Control Modules
The ViaLite ‘Horizons’ Monitoring and Control (M&C) modules can be used to fully manage ViaLiteHD RF over fiber systems. The HRC-3 Horizons option…
1:1 Redundancy
ViaLite fiber optic links can be configured into dual redundancy (1:1) systems to ensure maximum up-time. 1:1 is achieved by configuring the system …
WDM, CWDM & DWDM Multiplexers
The ViaLite range of WDM, CWDM and DWDM products allow multiple channels – travelling in either direction – to…
Digital Data
The Digital Data link provides full duplex transmission of RS422, RS485, RS232 and TTL signals over two single mode optical fibers. Distances of 1 m to 50 km…
Gigabit Ethernet Fiber Optic Link
The Ethernet link provides highly reliable, full duplex transmission of Ethernet signals over two single-mode optical fibers for distances of 1 m to 50 km…
Passive RF & Optical Cards
A range of carrier cards for passive RF and/or optical devices. Offering expanded capabilities and simple, streamlined integration in rack-mounted applications.
Rack Chassis
The ViaLiteHD 3U Chassis can hold up to 13 RF dual cards (up to 26 links) plus a Monitoring & Control Module and two power supplies. The chassis design…
Outdoor Enclosures: ODE-D range and DIN Rail Mounting Kit
The ODE-D and ODE-D+ outdoor enclosures are large, free standing outdoor enclosures with 25U of rack space. The units can…
Outdoor Enclosures: ODE-B3U
The new ViaLiteHD ODE-B3U houses and supports a 3U chassis that can tilt forwards for easy installation and maintenance. Also…