Fiber optics is the science of transmitting digital information as light pulses through optically pure glass or plastic fibers only slightly thicker than a human hair. Depending on application and budget, a fiber based data transfer system can be built with cabling that contains a single fiber or multiple fibers housed inside insulated casings. The light pulses that are transmitted over these fibers are typically generated by an infrared Laser or LED diode, and capable of carrying large amounts of data over great distances with only a mild reduction in attenuation (signal loss). Due to this high efficiency, fiber systems are rapidly replacing traditional copper cabling for longer distance transmission.
Compared to traditional copper cables, Fiber cables offer several advantages:
The process of transmitting data as light pulses over fiber is more complex than traditional copper wired connections. There are multiple fiber technologies available in the market which can be implemented depending on the system requirements, but all share some common components:
A compact, interchangeable optical transceiver module with SC, LC, or ST simplex or duplex connectors. Modules are typically hot swappable and connect to a SFP port commonly found on fiber hardware. SFP modules permit cable connectors or optical transmission wavelengths to be changed quickly. SFP connections can handle up to 4.25Gbps.
SFP+ modules offer higher bandwidth and offer data rates of up to 16Gbps with most common implementations around 10Gbps.
Most popular connector for Multi-Mode connections. It has a bayonet-style metal mount and a long cylindrical 2.5 mm ceramic ferrule.
Also known as a ‘square connector’ with a push-pull plastic coupling and spring loaded ceramic 2.5 mm ferrule. An older connector but still widely used and known for reliability.
Considered more recent, smaller replacement of the SC, and commonly used for Single-Mode Fiber systems. Contains a push-pull plastic connector with a latch and a smaller 1.25 mm ferrule.
The size, type and number of fibers in a fiber cable that carry the optical signal between the transmitter and the receiver can vary, but always consist of three main components:
A light pulse enters the fiber cable core and reflects off the cladding in a series of zig-zag bounces, known as total internal reflection (TIR). The light pulses travel at speed approximately 30% slower than the speed of light in a vacuum due to density of the glass or plastic fibers and impurities.
When planning a fiber system, the first decision is often whether to use Single-Mode or Multi-Mode fiber cabling. Understanding the differences between the two modes will help determine the best choice for a facility or remote production. Both modes have their benefits and should be selected based upon the application requirements such transmission distance, connector type, data rate and budget.
Single-Mode fiber cables have a small diameter core (~9 microns) and have a single mode (or path) of light transmission. This eliminates signal dispersion and allows receivers to work well even with very long fiber lengths. Single-Mode Fiber systems provide the highest transmission rates over greater distances.
Multi-Mode fiber cables have larger cores (~62.5 microns) that have multiple modes (or paths) of light transmission. Due to the various light paths, signal dispersion will occur and will increase with fiber length. Although more cost effective than single mode systems, Multi-Mode can cause overlapping reflections and increase the attenuation rate. This reduces the quality of the transmission over long distances, making Multi-Mode Fiber ideal for applications that require high bandwidth over medium distances.
Single-Mode Fiber systems can travel up to 50 times further, but are often 2-4 times more expensive than Multi-Mode. They both can handle 10 GigE speeds but Single-Mode has the capacity for even higher data rates. The two modes are incompatible with each other and cannot be mixed between two endpoints. Single-Mode is often used when transmitting data between facilities, whereas Multi-Mode is used between rooms or even between buildings in the same facility.
Coarse wavelength-division multiplexing (CWDM) is a fiber technology for multiplexing several streams of data onto a single fiber. In video production, CWDM is often applied for the transmission of multiple SDI channels over long distances on a Single-Mode Fiber.
CWDM essentially operates by simultaneously transmitting multiple light pulses at different optical wavelengths (colors). The wavelengths are multiplexed onto a single stream using passive optical devices such as prisms or filters. Each wavelength is an independent bit stream, and a SDI channel can be assigned to one of 18 defined wavelengths (ranging 1271nm - 1611 nm). On the receiving end, the wavelengths can be demultiplexed and sent to separate dedicated receivers. This efficient process has allowed CWDM to become a viable solution for long distance SDI video distribution.
AJA provides a range of products and options to allow you to make the most of your fiber infrastructure. The FiDO line of Mini-Converters are specifically designed to enable conversion and transfer of baseband video and raw video data across Fiber and the wide range of model choices allows you to address Single-Mode, Multi-Mode and CWDM needs.
Additionally many of our other product lines are offered with SFP cages, so that you can add Fiber SFP inputs and or outputs for recording and playback in the case of the Ki Pro line or handle Frame Sync and complex conversions with the FS line. A handy SFP Configurator is available to assist you with choosing the correct SFP for both the product at hand, and the input or output connectivity you wish to address.
Optical Fiber Converters (FiDO) offer unmatched flexibility and cost efficiency for 12G-SDI, 6G-SDI, 3G-SDI, and HDMI 2.0 Fiber conversion, allowing for long cable runs up to 10km for Single-Mode and up to 700m for Multi-Mode fiber systems. Transceivers, transmitters and receivers are available with SC, ST and LC connectivity. The FiDO-2T-X and FiDO-4T-X offer further configuration options with CWDM SFPs. All Optical Fiber Converters use a compact, robust, low-profile enclosure designed for tight spaces around equipment racks, trucks and on camera.
FiDO-TR-12G 1-Channel 12G-SDI/LC Single-Mode LC Fiber Transceiver
FiDO-T-12G 1-Channel 12G-SDI to Single-Mode LC Fiber Transmitter
FiDO-R-12G 1-Channel Single-Mode LC Fiber to 12G-SDI Receiver
FiDO-2T-12G 2-Channel 12G-SDI to Single-Mode LC Fiber Transmitter
FiDO-2R-12G 2-Channel Single-Mode LC Fiber to 12G-SDI Receiver
FiDO-TR 1-Channel 3G-SDI/LC Single-Mode LC Fiber Transceiver
FiDO-TR-MM 1-Channel 3G-SDI/LC Multi-Mode LC Fiber Transceiver
FiDO-T 1-Channel 3G-SDI to Single-Mode LC Fiber Transmitter
FiDO-T-MM 1-Channel 3G-SDI to Multi-Mode LC Fiber Transmitter
FiDO-R 1-Channel Single-Mode LC Fiber to 3G-SDI Receiver
FiDO-R-MM 1-Channel Multi-Mode LC Fiber to 3G-SDI Receiver
FiDO-T-SC 1-Channel 3G-SDI to Single-Mode SC Fiber Transmitter, with SDI loop out
FiDO-R-SC 1-Channel Single-Mode SC Fiber to 3G-SDI Receiver, with dual SDI outputs
FiDO-R-ST 1-Channel Single-Mode ST Fiber to 3G-SDI Receiver, with dual SDI outputs
FiDO-T-ST 1-Channel 3G-SDI to Single-Mode ST Fiber Transmitter, with SDI loop out
FiDO-2T 2-Channel 3G-SDI to Single-Mode LC Fiber Transmitter
FiDO-2T-MM 2-Channel 3G-SDI to Multi-Mode LC Fiber Transmitter
FiDO-2T-X 2-Channel 3G-SDI to Single-Mode LC Fiber Transmitter for CWDM SFPs
FiDO-2R 2-Channel Single-Mode LC Fiber to 3G-SDI Receiver
FiDO-2R-MM 2-Channel Multi-Mode LC Fiber to 3G-SDI Receiver
FiDO-4T 4-Channel 3G-SDI to Single-Mode LC Fiber Transmitter
FiDO-4T-MM 4-Channel 3G-SDI to Multi-Mode LC Fiber Transmitter
FiDO-4T-X 4-Channel 3G-SDI to Single-Mode LC Fiber Transmitter for CWDM SFPs
FiDO-4R 4-Channel Single-Mode LC Fiber to 3G-SDI Receiver
FiDO-4R-MM 4-Channel Multi-Mode LC Fiber to 3G-SDI Receiver
FiDO-4T-ST 4-Channel 3G-SDI to Single-Mode ST Fiber Transmitter
FiDO-4R-ST 4-Channel Single-Mode ST Fiber to 3G-SDI Receiver
Open architecture, 2RU modular rack frame system supported by a diverse range of terminal equipment manufacturers, including AJA Video Systems. The frame has a 20-slot capacity with excellent cooling capabilities and power handling for high-density applications including broadcast, OB truck and live event environments. Supports a wide range of openGear cards for HDMI conversion, Scaling conversion, SDI audio embedding/disembedding, and Single-Mode/Multi-Mode Fiber extension. Fiber capable openGear cards listed below.
openGear-Compatible 2RU Rackframe
The AJA OG-X-FR is a 2RU high openGear frame which is compatible with any openGear card and offers DashBoard support for the latest AJA DashBoard compatible openGear cards. The frame has a 20-slot capacity with excellent cooling capabilities for high-density applications and compatibility with advanced openGear connectivity options for supported cards including AJA Fiber OG cards.
OG-FiDO-TR 1-Channel 3G-SDI/LC Single-Mode LC Fiber Transceiver
OG-FiDO-T 1-Channel 3G-SDI to Single-Mode LC Fiber Transmitter
OG-FiDO-R 1-Channel Single-Mode LC Fiber to 3G-SDI Receiver
OG-FiDO-2T 2-Channel 3G-SDI to Single-Mode LC Fiber Transmitter
OG-FiDO-2R 2-Channel Single-Mode LC Fiber to 3G-SDI Receiver
OG-FiDO-2T-X 2-Channel 3G-SDI to Single-Mode LC Fiber Transmitter for CWDM
OG-FiDO-TR-MM 1-Channel 3G-SDI/LC Multi-Mode LC Fiber Transceiver
OG-FiDO-T-MM 1-Channel 3G-SDI to Multi-Mode LC Fiber Transmitter
OG-FiDO-R-MM 1-Channel Multi-Mode LC Fiber to 3G-SDI Receiver
OG-FiDO-2T-MM 2-Channel 3G-SDI to Multi-Mode LC Fiber Transmitter
OG-FiDO-2R-MM 2-Channel Multi-Mode LC Fiber to 3G-SDI Receiver
AJA provides a wide selection of SFP fiber modules. The fastest way to ensure the accurate selection of SFP modules that meet application requirements and ensure seamless AJA product integration into facility infrastructures, is to utilize the AJA SFP Configurator.
AJA provides a range of 1RU frame synchronizers and multi-capable converters for systems from SD to 4K. Fiber options available on the FS2, FS4, and FS-HDR, plus up to 4 channels of HD support and advanced workflows including real-time HDR transforms.
HDR 4K/UltraHD/2K/HD frame synchronizer and converter
FS-HDR, a 1RU, rackmount, universal converter/frame synchronizer, is designed specifically to meet the High Dynamic Range (HDR) and Wide Color Gamut (WCG) needs of broadcast, OTT, production, post and live event AV environments, where real time, low latency processing and color fidelity is required for 4K/UltraHD and 2K/HD workflows. Developed in partnership with Colorfront, the FS-HDR’s HDR/WCG functionality is powered by Colorfront Engine™ proprietary video processing algorithms.
FS-HDR also serves as a full, 1-Channel up, down, cross-converter for 4K/UltraHD/2K/HD HDR transformation, conversion and frame sync needs and in 4-Channel mode, offers 4 independent channels of 2K/HD conversion including HDR transformations with a wealth of digital and optional 12G-SDI Fiber LC and 12G-SDI BNC SFP connectivity.
4-Ch 2K/HD/SD or 1-Ch 4K/UltraHD Frame Sync and Up/Down/Cross-Converter
FS4 is a 4-Channel 2K/HD/SD or 1-Channel 4K/UltraHD frame synchronizer and up, down, cross-converter. AJA’s flagship frame synchronizer and converter offers incredible versatility and connectivity in a sleek 1RU frame for all your 4K/UltraHD and 2K/HD/SD conversion needs, with a wealth of digital and optional 12G-SDI Fiber LC and 12G-SDI BNC SFP connectivity. Offering a wide range of connection options for both video and audio, FS4 can do the work of four separate devices in 2K/HD/SD or combine all processors and channels together for maximum flexibility for 4K/UltraHD productivity.
Dual-channel converter and frame synchronizer
Offering huge flexibility and the power to adapt to meet the needs of rapidly changing environments, FS2 offers unprecedented conversion and frame synchronization power in a single 1RU space.
FS2 can be used as two separate Frame Synchronizers/Format Converters, or the two channels can be linked with the internal FS2 keyer to do the work of three or more devices - for example HD sidebar keying where both the video and background graphics are up-converted and combined.
Ki Pro Ultra Plus digital file recorders and players cover a range of raster, codec and connectivity needs including direct SFP connectivity for 4K/UltraHD/2K/HD recording and playback. Designed to be both portable with a built-in carry handle or rackmountable with half rack wide 2RU high dimensions.
4K/UltraHD/2K/HD Recorder/Player & Multi-Channel HD Recorder
Ki Pro Ultra Plus is a Multi-Channel Apple ProRes® recorder offering up to 4-Channels of simultaneous HD recording, or in Single Channel mode a 4K/UltraHD/2K/HD Apple ProRes, Avid DNxHR, or Avid DNxHD® MXF recorder and player supporting the latest connectivity including 3G-SDI, Fiber and HDMI 2.0.