Can a long-reach module be selected by distance alone?
No. Calculate fiber, connector, splice and MUX loss against the ordered optical specification.
Campus and Metro Optical Transport
Campus and Metro Optical Transport for Carrier Networks
Plan 2km, 10km, 40km and longer single-mode, BiDi and WDM links using the complete optical budget and wavelength plan.
Selection FAQ
Scenario selection questions
When are LR and ER evaluated?
LR is commonly evaluated for 10km-class links and ER for 40km-class links, subject to the exact rate and P/N.
When should WDM or BiDi be used?
Use them when fiber resources are constrained, with matched wavelengths, channels and optical budgets.
Typical Scenarios
Typical deployment positions
01
Campus and inter-building
Use FR or LR directions with a verified duplex-SMF budget.
02
Metro edge and site-to-site
Evaluate LR, ER and the full loss and dispersion conditions.
03
Fiber reuse
Use BiDi, CWDM or DWDM only with a complete pairing and channel plan.
Selection Guide
Scenario selection priorities
Reach and optical budget
Duplex, single-fiber or WDM
Wavelength pairing
Temperature and lifecycle
Recommended Products
Recommended product directions
100G and 200G Optical Transceivers → 100G and 200G Optical Transceivers covering 100G QSFP28 SR4, 100G QSFP28 PSM4, 100G QSFP28 DR1, 100G QSFP28 FR1, 100G QSFP28 CWDM4, 100G QSFP28 LR1 and related cable directions. Compare 100G and 200G optical transceivers, including 100G QSFP28 and 200G QSFP56 directions, without assuming the combined page is a permanent split point. 40G QSFP+ Transceivers → 40G QSFP+ Transceivers covering 40G QSFP+ SR4, 40G QSFP+ eSR4, 40G QSFP+ PSM4, 40G QSFP+ CWDM4 / IR4, 40G QSFP+ BiDi, 40G QSFP+ LR4 and related cable directions. Includes 40G optical transceivers, QSFP+ modules, cables and AOC/DAC directions for legacy network expansion.
Low-speed SFP Transceivers
1.25G SFP LX
Duplex LC 10km
10G SFP+ Transceivers
10G SFP+ LR
Duplex LC 10km
10G SFP+ Transceivers
10G SFP+ ER
Duplex LC 40km
10G SFP+ Transceivers
10G SFP+ BiDi
Simplex LC 10km / 20km / 40km / 80km
10G SFP+ Transceivers
10G SFP+ CWDM
Duplex LC 10km / 40km / 80km
10G SFP+ Transceivers
10G SFP+ DWDM
Duplex LC 40km / 80km
Related Solutions
Technical solutions for this application
Long-Reach Optical Transmission
Long-Reach Optical Transmission
2km / 10km / 40km+
View solution →WDM and BiDi Transmission Solutions
WDM and BiDi Transmission Solutions
CWDM / DWDM / BiDi
View solution →Compatibility Validation
Compatibility Validation
Multi-vendor samples and rollout
View solution →