# Highspeed Wavelength DB Backfill

Date: 2026-05-09
Actor: Codex
Scope: TIP highspeed transceivers missing `wavelengths`
Mode: DB-only, evidence constrained, Erik-safe

## Why

After tightening comparable-product logic, missing wavelength evidence became one of the biggest remaining blockers for reliable 1:1 competitor matching. A browser crawl was not needed for rows where the existing DB already contained deterministic optical evidence in part numbers, standard names, notes, or product URLs.

## Rule

Only fill `wavelengths` when the DB text gives deterministic evidence:

- explicit `850nm`, `1310nm`, `1311nm`, or `1550nm`
- MMF plus SR/SR4/SR8/SRBD/VR/ESR/CSR family => `850`
- SMF plus DR/FR/LR/ER/PSM family => `1310`
- SMF plus CWDM4 => `1271,1291,1311,1331`

Ambiguous rows were skipped.

## Result

Rows updated:

- `129` rows set to `1310`
- `40` rows set to `850`
- `18` rows set to `1271,1291,1311,1331`
- total: `187`

Post-update highspeed wavelength gap:

- highspeed rows: `4438`
- still missing wavelengths: `1908`

Largest remaining missing-wavelength vendors:

- ATGBICS: `663`
- NADDOD: `419`
- Flexoptix: `183`
- Eoptolink: `141`
- FS.COM: `114`
- QSFPTEK: `97`

## Health

Public TIP health after the update:

- status: `healthy`
- load status: `ok`
- memory used: `13%`

## Training Note

TIPLLM should separate deterministic evidence backfill from source verification. It is safe to infer wavelengths from established optical family codes only when the fiber class matches; otherwise the row must remain unresolved until a vendor-specific parser or source crawl supplies stronger evidence.
