Multiplexer/demultiplexer and multiplexing/demultiplexing method

摘要

In order to realize a multiplexer/demultiplexer in which utilization efficiency of a frequency is high, wavelength characteristics of a transmission band is flat, the cost is low, the size is small, and a wavelength and a band are variable, the multiplexer/demultiplexer includes: first light branching means for branching inputted light into plurality of pieces of light and outputting the branched pieces of light; a plurality of light wavelength separating means for separating and outputting light outputted from the first light branching means for each of predetermined frequency bands; and an optical coupling means for making outputs having frequency bands different from each other among outputs from the light wavelength separating means gather and be outputted.

主权项

1. A multiplexer/demultiplexer, comprising:
a first light branching unit configured to branch inputted light into a plurality of pieces of light and to output said branched pieces of light; a plurality of light wavelength separating units configured to separate and output light outputted from said first light branching unit for each of predetermined frequency bands; and an optical coupling unit configured to make outputs having different pieces of said frequency bands among outputs from said light wavelength separating unit gather with each other to output said gathered outputs; wherein:
center frequencies of said frequency bands are arranged in a predetermined frequency interval,said center frequencies of said plurality of light wavelength separating unit differ from each other;each of said frequency bandwidths and intervals of respective said center frequencies of said plurality of light wavelength separating unit are identical, respectively; andsaid multiplexer/demultiplexer includes said light wavelength separating unit of a quantity of a numerical value made by dividing said intervals of said center frequencies by said frequency bandwidths.