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Dispersion Compensating Fiber DCF from Japan

High negative dispersion optical fiber used in DWDM systems to compensate chromatic dispersion of standard SMF, enabling long-haul voice, data, and video transmission at 10/40/100G rates. Typical -80 to -100 ps/nm/km dispersion at 1550nm. HTS 9001.10.0030 classification.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Provide dispersion slope and PMD specs for system compatibility

Declare figure-of-merit (dispersion/slope normalized to loss)

Confirm splicing compatibility with G.652 SMF (9/125μm)