100G Plug-in Module Connector Eliminates Fiber Handling and Frees up Space on the Host Board
LightCONEX28 LC 100G (full-duplex) active blind mate optical interconnect is a revolutionary solution for VPX systems that includes a fixed plug-in module connector and a floating backplane connector compatible with the proposed VITA 66.5 standard. The low-profile plug-in module connector is screwed on the board edge through an interposer, saving board space and eliminating fiber cable handling.
Specifications and features:
●Optical interconnects: Mechanical Transfer (MT) ferrule with a linear array of 12 parallel multimode fibers
●Secure connection: Spring within the backplane optical cable provides the mating force between the plug-in module and backplane MTs.
●Standards: Designed following VITA 66.5 standard (forthcoming).
●Maintenance: Supports two-level maintenance.
●Blind mate: Eliminates fiber handling and frees up space on the host board.
●Robustness: Tested for vibration and shock over the industrial temperature range, exposure to humidity, salt fog, sand and dust, mate/un-mate cycles, following military specs.
Module connector features:
●Rugged: MIL-STD 883 compliant
●Moisture resistant: sealed
●Compact transceiver (L×W×H):27 mm ×14 mm ×3.5 mm
●Performance: 28 Gbps/lane from –40 ºC to 85 ºC
●Reach: up to 100 m, OM3 fiber
●BER: up to 10–9 with −9 dBm sensitivity
●Low power consumption: 1.4 W per module (4+4)-lane 28G
●Data interface: CML
●Board mount: LGA connector
Applications:
●VPX single board computing
●C4ISR embedded systems
●AESA radars
●Ethernet switches, high BW communication links
Fig.1 LightCONEX LC with 12-lane active module on a 3U VPX board (Style A with front mating plate removed).
Fig.2 (a).VPX board with VITA 46 and LightCONEX LC plug-in connectors (Style A)
(b).ELMA 3U VPX backplane with LightCONEX LC backplane connector (Style A)
(c).Close-up of the LightCONEX LC 12-lane plug-in module connector (Style A)
(d).Close-up of the LightCONEX LC 12-lane backplane connector (Style A)
Plug-in module connector features
The LightCONEX plug-in module connector contains the optical transceiver with its MT ferrule, an LGA interposer, and a front mating plate. The front mating plate has the primary alignment feature socket and a hole to accommodate the MT from the transceiver.
Fig.3 LightCONEX plug-in module connector Style B shown here.
The main components of the plug-in module connector are:
1.Front mating plate, with:
2.Hole to accommodate MT from the transceiver
3.Primary alignment feature socket
4.Optical transceiver
5.Interposer
Style B and C
The LightCONEX plug-in module connectors Style B and C have front mating plates for each respective style. The primary alignment feature is located below the optical transceiver. These connectors require interposers ITP3, ITP4, or IPT5.
Style B has one optical transceiver and one cabled MT.
Style C has one optical transceiver.
Fig.4 Plug-in module connector styles all shown with 4TRX transceiver.
Optical transceiver with front mating plate
The plug-in module connectors are equipped with optical transceivers offering multiple transmit and receive and bandwidth configurations and with required interposers:
LightCONEX28 4TRX module: for Styles B and C
Interposer
2 mm, 96 positions. Styles B and C (ITP5)
Fig.5 ITP5 interposer
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