{"tool":{"slug":"dwdm-spacing-calculator","layer":"optical","layer_name":"Optical","name":"DWDM Spacing Calculator","question":"How many DWDM channels does my long-haul AI traffic need?","short_description":"Wavelength count and grid spacing required for a target aggregate bandwidth over fiber.","status":"coming_soon","inputs":["Aggregate bandwidth","Per-lambda rate","Reach / amplifier budget"],"outputs":["Channel count","Grid spacing (GHz)","Recommended optics"],"topic_slug":"optical-modules"},"related_tools":[{"slug":"qsfp-dd-vs-osfp","layer":"optical","name":"QSFP-DD vs OSFP","question":"Which connector form factor wins for an 800G AI fabric?","url":"/tools/optical/qsfp-dd-vs-osfp"},{"slug":"400g-vs-800g-economics","layer":"optical","name":"400G vs 800G Economics","question":"Is 800G cheaper per Gbps than 400G right now?","url":"/tools/optical/400g-vs-800g-economics"},{"slug":"coherent-vs-lumentum-comparison","layer":"optical","name":"Coherent vs Lumentum","question":"Which optical-module supplier has the stronger 2026 roadmap?","url":"/tools/optical/coherent-vs-lumentum-comparison"}],"links":{"page":"/tools/optical/dwdm-spacing-calculator","layer_index":"/tools/optical","topic":"/topic/optical-modules/products"},"citation_url":"/tools/optical/dwdm-spacing-calculator","generated_at":"2026-05-11T22:09:11.162Z"}