Why must BiDi wavelengths be paired?
Each endpoint must transmit on the wavelength received by the opposite endpoint.
WDM and BiDi Transmission Solutions
WDM and BiDi Transmission Solutions
Use CWDM, DWDM, BiDi and Compact SFP directions to reuse fiber resources with a controlled wavelength, channel, pairing and budget plan.
Delivery FAQ
Solution delivery questions
How do CWDM and DWDM differ?
They use different channel spacing and must match the deployed MUX/DEMUX passband.
Is receive power enough for WDM acceptance?
No. Also review wavelength, insertion loss, dispersion, OSNR, errors, FEC and alarms.
Can LWDM or MWDM replace CWDM or DWDM directly?
Not by default. Center wavelengths, channel spacing, thermal method and passive components can differ; confirm the system design, P/N and MUX/DEMUX passband.
How should a wavelength-pairing fault be isolated?
Check Tx/Rx wavelengths, endpoint direction, module P/N, MUX/DEMUX channel and patch path, then compare optical power, errors, FEC and alarms.
Core Capabilities
Core solution capabilities
01
Wavelength and channel plan
Match modules to CWDM/DWDM channels and deployed MUX/DEMUX devices.
02
BiDi pairing
Confirm complementary Tx/Rx wavelengths and both endpoint directions.
03
Fiber efficiency
Evaluate single-fiber and multi-wavelength options without losing traceability.
04
WDM family boundaries
Separate CWDM, DWDM, LWDM and MWDM by wavelength, spacing, thermal control and MUX/DEMUX plan.
Delivery Process
From requirements to delivery
1
Audit existing fiber
Record fiber count, MUX devices, interfaces and current wavelengths.
2
Issue a paired list
Define site, direction, wavelength and module for every endpoint.
3
Validate channel by channel
Check power, loss, alarms, FEC/errors and service stability.
Recommended Products
Recommended product directions
25G SFP28 Transceivers → 25G SFP28 Transceivers covering 25G SFP28 SR, 25G SFP28 LR, 25G SFP28 ER, 25G SFP28 BiDi, 25G SFP28 CWDM, 25G SFP28 DWDM and related cable directions. Includes 25G optical transceivers, SFP28 modules, AOC and DAC directions for server and ToR access. 10G SFP+ Transceivers → 10G SFP+ Transceivers covering 10G SFP+ SR, 10G SFP+ LR, 10G SFP+ ER, 10G SFP+ BiDi, 10G SFP+ CWDM, 10G SFP+ DWDM and related cable directions. Covers 10G optical transceivers, SFP+ modules, AOC and DAC directions for access and backbone links.
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
25G SFP28 Transceivers
25G SFP28 BiDi
Simplex LC 10km / 30km
25G SFP28 Transceivers
25G SFP28 CWDM
Duplex LC 10km / 15km
25G SFP28 Transceivers
25G SFP28 DWDM
Duplex LC 10km