3m LC/APC to LC/APC Simplex Single Mode Fiber Patch Cable, OS2 9/125 Corning, LSZH/OFNR, Yellow
The CableLeader FB115-91XX is an OS2 simplex patch cable with a green LC/APC connector on each end: one Corning single mode fiber in a single 2.0 mm jacket, angle-polished at both terminations for 65 dB minimum return loss. It combines two structural choices in one factory assembly — simplex construction for single-fiber links and APC polish for reflection-sensitive optics — across a family spanning 1 m through 15 m.
The APC endface is polished at an 8-degree angle so residual reflection is steered out of the fiber core instead of traveling back toward the transmitter. The result is 65 dB minimum return loss, a 10 dB margin over the 55 dB UPC standard, which matters on GPON distribution, RF-over-fiber and CATV overlay links, and high-power analog paths where back-reflection degrades signal quality. Green housings mark APC polish: this cable mates only with green APC ports, never with blue UPC receptacles, because the angled and flat endfaces cannot make proper contact.
Simplex construction carries exactly one optical path, the correct format for GPON links that run on a single strand, offeri transceivers with APC interfaces, monitoring taps, and spare-strand restoration on installed APC plant. Each LC/APC connector uses a short boot 19.5 mm body whose 1.25 mm ferrule suits high-density distribution panels, and every termination is factory-tested to 0.30 dB maximum insertion loss at 1310/1550 nm.
The jacket is LSZH/OFNR rated under UL file E510298. Low-smoke zero-halogen material limits toxic emissions in enclosed equipment rooms and residential installs, while the OFNR riser rating permits vertical runs between floors. The yellow jacket is the industry marker for single mode cable, keeping OS2 runs visually distinct from aqua and orange multimode patching, and RoHS compliance covers restricted-substance procurement requirements.
The Corning G657A1 fiber grade is bend insensitive, tolerating the tight routing radii found in wall enclosures, cable managers, and FTTH outlets without the attenuation spikes standard G652D fiber shows under the same handling. It remains fully compatible with installed G652D single mode plant, so the cable drops into existing OS2 structured cabling, splice trays, and panels.
Compatibility & Ordering Information — FB115-91XX mates with green LC/APC single mode ports: GPON OLT line cards, RF-over-fiber and CATV transmitters, APC distribution panels, and APC-terminated outlets. Do not plug it into blue UPC ports. The family is offered from 1 m through 15 m; select the variant covering the run plus a service loop. For two-fiber APC links see the FB110-91XX duplex family; for a UPC simplex format see FB119-91XX; for an LC/APC to SC/APC simplex jump see FB116-92XX.
Product Comparison: Simplex APC vs Duplex APC Single Mode Patch Cable
Both cables use identical Corning OS2 9/125 G657A1 fiber and green LC/APC connectors polished at 8 degrees for 65 dB minimum return loss; the difference is the number of fibers, which must match how your equipment uses the link. The table summarizes the decision:
AttributeSimplex LC/APC OS2 (this product)Duplex LC/APC OS2ConstructionOne fiber, single 2.0 mm strand, one LC/APC per endTwo fibers, zipcord pair, LC/APC pair per endTransmit / ReceiveBoth directions on one strand (offeri/GPON) or one-way signalTransmit on one strand, receive on the otherReturn Loss65 dB min, APC both ends65 dB min, APC both ends (same polish)Matching EquipmentGPON OLT ports, APC offeri modules, monitoring tapsTwo-fiber APC links between panels and equipmentLength Range1 m to 15 m in this family1 m to 5 m in the duplex familyBest ForSingle-fiber GPON drops, spare-strand patchingStandard two-fiber APC data links
Select the simplex version (this product) when the link uses exactly one fiber — GPON runs, APC offeri transceivers, or restoring one strand of an installed pair.
Select the duplex version when equipment transmits and receives on separate APC fibers. Both are green APC and mate only with APC ports — never with blue UPC.
FAQ
What is the difference between LC/APC and LC/UPC connectors?
LC/APC has a green housing and an 8-degree angle-polished endface rated 65 dB minimum return loss; LC/UPC has a blue housing and a flat/domed polish rated 55 dB. The two are not intermateable — the mismatched endfaces leave an air gap and can damage both ferrules. This cable is LC/APC on both ends and mates only with green APC ports.
Is this cable compatible with GPON and RF-over-fiber equipment?
Yes — if the ports are green LC/APC. GPON OLT line cards, RF-over-fiber transmitters, and CATV overlay gear commonly use APC interfaces precisely because the 65 dB return loss protects reflection-sensitive signals. Check the port color first: green means APC and accepts this cable, blue means UPC and requires an LC/UPC cable instead.
What loss ratings does this cable carry?
Each green LC/APC connector is factory-tested to 0.30 dB maximum insertion loss at 1310/1550 nm and rated 65 dB minimum return loss, the APC standard. The single Corning 9/125 um G657A1 strand is OS2 grade, serving 1310 nm and 1550 nm single mode links across the full 1 m to 15 m family range.
How do I connect a simplex LC/APC cable correctly?
Match green to green: confirm the port is APC, align the LC latch with the keyway, and push straight in until it clicks. Never force this connector into a blue UPC port. On one-way paths confirm which port transmits before patching, and leave a small service loop so the connector is never under tension.
Which APC patch cable is best — simplex or duplex?
Choose simplex (this cable) when the link uses one fiber: GPON single-strand runs, APC offeri transceivers, monitoring taps, and spare-strand restoration. Choose the FB110-91XX duplex family when equipment transmits and receives on separate APC fibers. Count the fibers your ports need; that decides the format.
