ECCN
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6C992
6C992 Optical sensing fibers not controlled by 6A002.d.3 that are modified structurally to have a ‘ beat length’ of less than 500 mm (high birefringence) or optical sensor materials not described in 6C002.b and having a zinc content of equal to or more than 6% by ‘ mole fraction.’
- Category
- Category 6—Sensors and Lasers
- Product group
- C. “Materials”
Reason for Control
- AT
Official text
License Requirements
Reason for Control:
AT
Control(s) Country Chart (See Supp. No. 1 to part 738) AT applies to entire entry AT Column 1
List Based License Exceptions (See Part 740 for a description of all license exceptions)
LVS: N/A
GBS: N/A
List of Items Controlled
Related Controls: N/A
Related Definitions: (1) ‘Mole fraction’ is defined as the ratio of moles of ZnTe to the sum of the moles of CdTe and ZnTe present in the crystal. (2) ‘Beat length’ is the distance over which two orthogonally polarized signals, initially in phase, must pass in order to achieve a 2 Pi radian(s) phase difference.
Items: The list of items controlled is contained in the ECCN heading.
ecfr-15cfr774-supp1-2026-08-28 · effective 2026-08-28
Issue date 2026-08-28. Amendment date 2026-08-28.
- eCFR Commerce Control List (15 CFR 774, Supplement No. 1)www.ecfr.gov
- eCFR versioner XML captured at ingestwww.ecfr.gov
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