Abstract
Fuzzy logic has been studied actively just after fuzzy set theory proposed. In those studies, fuzzy truth values of Type-2 have acted important roles.
Usually, real numbers which are treated as fuzzy truth values have been approximately represented in binary bit strings in digital computers. From that standpoint, fuzzy logic has been approximately treated only in framework of binary logic.
In this report, we propose a method for representing fuzzy truth values of Type-2 which are physically observable in light communication which is recently focused a useful method for long distance communication and communication among devices in IC chips.
