Is single-mode more expensive than multimode?+
The fiber cable itself is comparable in cost today; the historical premium was in the optics. For 10G and beyond, single-mode optics have come down enough that the total-installed-cost gap is small for anything longer than a few hundred meters — and single-mode buys 20+ years of speed roadmap.
Can I mix single-mode and multimode in the same backbone?+
Yes, and we frequently pull hybrid trunks — 12-24 strands OS2 plus 6-12 strands OM4. Panels are dedicated per fiber type since connectors and reference cables differ. Never mate SM and MM together — the core-diameter mismatch destroys signal.
APC or UPC — which do I need?+
UPC for standard enterprise Ethernet and short-reach 10G. APC for anything RF-over-fiber (DAS, CATV), video, long-reach single-mode, or where return loss must be better than 60 dB. Never mate APC to UPC — the geometry mismatch damages both connectors.
How far can single-mode reach at 10G? 100G?+
10GBASE-LR: 10km. 10GBASE-ER: 40km. 10GBASE-ZR: 80km. 100GBASE-LR4: 10km. 100GBASE-ER4: 40km. 400GBASE-LR4: 10km. Practical inside-plant and campus reaches are always well within these limits.
What's the difference between OS1 and OS2 fiber?+
OS2 is low-water-peak fiber that works across the full 1260-1625 nm CWDM band. OS1 has a water-peak attenuation spike at 1383 nm that limits CWDM applications. New installs are always OS2.
How long does an OS2 installation last?+
Physically, 40+ years properly installed and protected. Application-wise, every optical Ethernet standard from 10G to 400G runs on OS2 — the plant will outlast several generations of switch and optic upgrades.
Can you terminate single-mode in the field or only fusion-splice?+
For any single-mode termination we fusion-splice a factory pigtail — field-polished single-mode connectors are difficult to get consistently under 0.5 dB loss and are not standard practice on quality commercial jobs. Pigtail-splice is the professional method.
Do you install DWDM or CWDM multiplexers?+
We install the fiber plant to support DWDM/CWDM and can install and terminate customer-supplied passive mux/demux gear. Optic and channel-plan design is coordinated with your networking team or optical vendor.
How much does single mode fiber cost?+
Single Mode Fiber pricing depends on drop count, cable type, pathway complexity, and building conditions. Most commercial projects range from $150 to $350 per drop installed. Request a free site survey for an itemized quote.
Do you provide single mode fiber nationwide?+
Yes. Access Cabling is headquartered in California with a nationwide technician network for multi-site rollouts across all 50 states.
Is single mode fiber certified and warrantied?+
Every installation is Fluke-tested and certified. Structured cabling installs carry manufacturer warranties of up to 25 years through our Panduit, CommScope, Leviton and Belden partner relationships.
