24-Fiber Mpo Connectors; Lc Duplex Connectors - Juniper PTX1000 Hardware Manual

24-Fiber MPO Connectors

You can use patch cables with 24-fiber MPO connectors to connect two supported transceivers of the
same type—for example, 100GBASE-SR10-to-100GBASE-SR10.
Figure 25 on page 64 shows the 24-fiber MPO optical lane assignments.
Figure 25: 24-Fiber MPO Optical Lane Assignments
NOTE: Ensure that you order cables with the correct polarity. Vendors refer to these crossover
cables as key up to key up, latch up to latch up, Type B, or Method B. If you are using patch panels
between two transceivers, ensure that the proper polarity is maintained through the cable plant.
The MPO optical connector for the CFP2-100G-SR10-D3 is defined in Section 5.6 of the CFP2 Hardware
Specification and Section 88.10.3 of IEEE STD 802.3-2012. These specifications include the following
requirements:
Recommended Option A in IEEE STD 802.3-2012.
The transceiver receptacle is male. A patch cable with female connector is required to mate with the
module.
Ferrule finish shall be flat polished interface that is compliant with IEC 61754-7.
Alignment key is key up.
The optical interface must meet the requirement FT-1435-CORE in Generic Requirements for Multi-Fiber
Optical Connectors. The module must pass the wiggle test defined by IEC 62150-3.

LC Duplex Connectors

You can use patch cables with LC duplex connectors to connect two supported transceivers of the same
type—for example, 40GBASE-LR4-to-40GBASE-LR4 or 100GBASE-LR4-to100GBASE-LR4. The patch
cable is one fiber pair with two LC duplex connectors at opposite ends. LC duplex connectors are also
used with 12-fiber ribbon breakout cables, as described in
MPO-to-LC Duplex Connectors" on page
Figure 26 on page 65 shows an LC duplex connector being installed in a transceiver.
"12-Fiber Ribbon Breakout Cables with
61.
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