ABSTRACT

M common notation for the number of modes in a step index fiber, given by

M = V 2

2 where V is the fiber parameter.

M (mega) abbreviation for 1,048,576 (not for 1 million).

M-algorithm reduced-complexity breadthfirst tree search algorithm, in which at most M tree nodes are extended at each stage of the tree.

m-phase oscillator See multi-phase oscillator.

m-sequence maximal length sequence. A binary sequence generated by a shift register with a given number of stages (storage elements) and a set of feedback connections, such that the length of the sequence period is the maximum possible for shift registers with that number of stages over all possible sets of feedback connections. For a shift register with n stages, the maximum sequence period is equal to 2n − 1.