|New Glenair High-Reliability Fiber Optic Interconnect Technologies|
t has been almost five years since QwikConnect
last examined Glenair's high-reliability fiber optic
technologies. Since then, we have developed
several new fiber optic interconnection systems,
hired even more of the industry's best fiber optic
professionals, and expanded our factory capacity to
support the design, manufacture and supply of our
high-reliability fiber optic solutions.
Glenair MIL-DTL-38999 style fiber optic connectors and MIL-PRF-29504 qualified termini for use in Mil-Aero applications.
Glenair's MIL-DTL-38999 style fiber optic connector and termini have been designed into a number of programs and applications from avionics to ground-based systems. We enhanced the dimensional tolerances of the standard electrical D38999 connector to meet stringent fiber optic alignment requirements. Alignment key and keyway tolerances were tightened, along with tolerances of all connector components. These improvements allow precise mating of the connectors and provide optimal termini positioning.
Our Qualified MIL-PRF 29504/4 (pin) and /5 (socket) termini employ precision ceramic ferrules and alignment sleeve, allowing us to control fiber alignment concentricity to less than 1 micron (.00004 inch). While some manufacturers use less costly materials, Glenair has selected ceramic materials for their superior performance and durability. Connectors are available in a variety of mounting styles and materials including aluminum alloy, stainless steel, and composite thermoplastic with finish treatments such as electroless nickel, passivation, cadmium over nickel and more.
MIL-DTL-38999 style connectors and Qualified MIL-PRF-29504/4 and /5 termini are available for immediate shipment from our Same Day inventory.
Glenair MIL-PRF-28876 QPL fiber optic connector and MILPRF-29504 style contacts for use in Naval applications.
Glenair is the only fiber optic connector and termini manufacturer to also offer a complete line of specialized fiber optic backshells. Glenair fiber optic backshells prevent mechanical and environmental damage to fiber strands and eliminate data loss from micro-bending. Glenair offers both standard catalog backshell designs as well as custom versions in straight configurations as well as 45' and 90' angled fittings to mate with MIL-DTL-38999 and MIL- PRF-28876 and other connector types. Glenair's line of fiber optic backshells include strain-reliefs, banding adapters, cable seals, conduit adapters and protective covers. Available materials include aluminum alloy, stainless steel, and composite thermoplastic with a range of plating options and overmolding if desired. Many of these backshells and accessories are in our Same Day inventory and available for immediate shipment. The Glenair-patented Fiber Optic Test Probe and Connector Adapter System provide accurate, rapid and repeatable testing of even the most complex cable assemblies. Probes and adapters are available for all standard insert arrangements. Glenair also supplies fiber optic termination, inspection and cleaning systems as well as polishing and termination kits. In addition, Glenair supplies Video Bore Scopes, automated Cleaning Systems, and all the other tools required to keep system running at optimal performance.
New Fiber Optic Technologies
The Glenair High Density (GHD) Fiber Optic Connector System
The Glenair High Density (GHD) Fiber Optic Connector System is designed for applications requiring reduced size and weight. GHD offers insertion loss values less than .5 dB with dense cavity spacing achieved using an innovative Front Release terminus design that accommodates M85045/16 simplex cable.
With nearly double the density of MIL-PRF- 28876 and MIL-DTL-38999, the GHD utilizes precision SFF 1.25 mm ceramic ferrules and achieves optical performance equal to or better than the D38999 and M28876 interconnection systems. The GHD incorporates an O-ring piston seal at the connector interface that is far superior to traditional gasket sealing that can be susceptible to contamination or damage. The Alignment Sleeve Retainer (ASR) is easily removed to facilitate thorough cleaning and utilizes guide pin alignment to achieve repeatable optical performance through mating cycles. Should the ASR be damaged, it can be replaced or factory repaired.
Glenair High Density (GHD) F/O connection system, available in multiple materials and platings, for use in both military and ruggedized commercial applications.
O-ring sealing and terminus retention are built into the termini, eliminating potential rear grommet contamination and allowing tighter dimensional control in the one-piece insulator. If you damage a retaining clip, the damaged retention clip on the specific terminus can be replaced. A keying feature facilitates Angle Polish Connection that minimizes unwanted back refl ections to better than -60 dB, and hex feature on the terminus body accomodates tuning for optimal performance. GHD termini are genderless, eliminating the need to stock pins and sockets separately.
When it comes to backshell and accessory needs, the GHD is fully compatible with MIL-DTL- 38999 accessory threads. The GHD will also install into the same size MIL-DTL-38999 panel cutout, but with higher terminus density layouts providing up to 70 channels in shell size 25, and the ability to run more fibers. Cleaning and inspection is the same as for any LC ferrule, and Glenair has a full assortment of fiber optic termination, cleaning and inspection tools available. As mentioned, the Alignment Sleeve Retainer is easily removed, cleaned and re-inserted.
The GHD is ideal for just about every MILPRF- 28876 and MIL-DTL-38999 application where high density fiber connection is needed. GHD Connectors are available in stainless steel, aluminum, nickel-aluminum-bronze, and highstrength composite thermoplastic in a wide variety of finish treatments. Where weight reduction is paramount, such as in avionics applications, GHD composite connectors are ideal. The piston seal feature also makes the GHD attractive for geophysical environments such as down-hole drilling.
Glenair Expanded Beam Fiber Optic Connection System
The Glenair Expanded Beam Fiber Optic Connection System is ideal for harsh environments and uses proven STRATOS Lightwave™ Technology to eliminate data loss from environmental contaminants, rough handling, and repetitive mating cycles. STRATOS Lightwave™ Technology achieves superior optical performance by using laser-shaped optical-ball lens componentry that develops 800 times expansion for multimode and 2,000 times expansion for singlemode. This beam expansion virtually eliminates concerns about contamination, and the sealed optical alignment system provides superior protection from water, mud, dust, oil, and other contaminants.
Glenair expanded beam tactical fiber optic connection system for use in environmental field applications.
Applications for the Glenair Expanded Beam Fiber Optic Connection System include any harsh environment where optical connectors are subjected to repeated mating and unmating cycles. Some examples include lanyard-release missile fiber connections, geo-physical and down-hole settings. Glenair has integrated the STRATOS Lightwave™ Technology into standard MIL-DTL-38999 connector packages, for use in tactical military applications.
Glenair GFOCA Hermaphroditic Fiber Optic Connection System
The Glenair GFOCA, designed to meet requirements of MIL-PRF-83526/16 and /17 intermateable specifications with TFOCA II®, is the ultimate harsh environment, field-deployable fiber optic connection system. Corrosion-resistant and environmentally sealed with rugged aluminum housing and inserts, the GFOCA is ideal for applications that require reliable, repeatable mating. The GFOCA is hermaphroditic, simplifying potential confusion of whether plug or receptacle mating is required when stringing multiple fiber cable assemblies together.
Glenair GFOCA hermaphroditic fiber optic connection system is optimized for rapid deployment in rugged field applications.
The GFOCA is available as discrete connectors and termini or in a spooled assembly with up to two kilometers of cable. Designed to handle low speed analog and high speed digital data transmission, the GFOCA excels for long-run tactical battlefield communications, and is used for radar systems, missile defense systems, mobile launchers, downhole drilling, the broadcast industry, and other extremely harsh environments.
Next Generation (NGCON) Fiber Optic Connection System
The emerging NGCON Fiber Optic Connection System is designed to become the new standard for shipboard fiber optic interconnect applications. NGCON combines proven technology from standard MIL-PRF-28876 and MIL-DTL-38999 designs with new innovations that include rear-release genderless contacts and high-density packaging. Glenair is an active member of the NGCON consortium designing this new interconnection system for the US Navy and other potential applications.
The Next Generation fiber optic connection system (NGCON) is designed for Naval and Mil-Aero applications requiring higher density and advanced performance.
High-density insert arrangements will house genderless rear-release precision termini. The genderless terminus design reduces inventory and part numbers by eliminating discrete pins and sockets.
Like the Glenair High-Density (GHD) product, the NGCON will employ a removable Alignment Sleeve Retainer (ASR) for trouble-free cleaning and guide pin alignment. Again, should the ASR be damaged, it can be replaced or factory repaired. The 1.25 mm diameter ceramic ferrule is standard LC size, with environmental sealing on the terminus. NGCON's rear-release contacts will be familiar to traditional MIL-DTL-38999 users. The NGCON design specifies 10 polarization positions—more than any other connectors.
With tighter tolerance and greater fl exibility than MIL-PRF-28876, the Glenair NGCON will be ideal for shipboard, ground tactical and avionics applications. Glenair intends to qualify this new product upon release of the new NGCON specification.
Glenair Size 16 Front Release Custom Fiber Optic Connection System Glenair Size 16 precision front release termini are a unique vehicle to facilitate custom connector design. Say 'goodbye' to long engineering processes and prototyping for optical media integration into a broad range of cylindrical and rectangular connector packages and systems'lead times have never been so short.
Glenair designed the 181-011 and 181-012 series rear-insertion, front-release fiber optic contacts with retention and environmental sealing components directly on the termini'ready for snap insertion into a machined cavity within the connector—with no upper limit on number of fiber cavities. In the unlikely circumstance that you break a retention clip or damage an O-ring, both component elements can be replaced without discarding the entire termini or connector. The termini uses precision ceramic ferrule and alignment sleeves coupled with stainless steel contact components. It accomodates all popular fiber sizes from 9/125 micron singlemode to 1,000 micron multimode.
Glenair has extensive in-house expertise and capacity to machine custom connector shells (in all standard materials and finishes including aluminum alloy, stainless steel and titanium) to the precise tolerances required in fiber optic connection systems. The size 16 custom termini allows us to do so without costly tooling and engineering charges. Finished custom connector systems perform at insertion-loss levels (less than 0.5 dB) equivalent to other high-performance tactical fiber optic systems such as MIL-DTL-38999 and MIL-PRF-28876.
Glenair's size 16 front release custom fiber optic terminus facilitates easy integration of optical media into virtually any connector package.
High-Reliability Fiber Optic Technologies
These new technologies demonstrate how seriously Glenair takes its commitment to providing complete, full-spectrum, 'one-stop shopping,' in fiber optic interconnect solutions. Even as new solutions are added, we continue to shrink lead times on components, quotations, and assemblies. We are committed to acting as more than just a supplier'we're serious about the business of engineering the right solution for every application. From free samples, to free application engineering, to a liberal attitude on tooling expenses and other one-time charges, Glenair is committed to being not only the technology leader, but also the service and availability leader in the high-reliability fiber optic interconnect industry. Please feel free to contact the factory for engineering assistance on both standard and custom fiber optic connection systems. Our latest catalog, Fiber Optic Interconnect Solutions, covers all the technologies introduced in this issue of QwikConnect and is available in hard-copy or on the web at www.glenair.com
TFOCA II is a registered trademark of Amphenol Fiber System International