FIELD: physics.
SUBSTANCE: invention is a method for a controlled selective adding/dropping a channel in a fibre-optic communication system with wavelength-division multiplexing of 2N channels whose optical frequencies can be adjusted, but the spectral interval Δv between neighbouring channels is contestant, through controlled optical add/drop multiplexers (70, 80, 90), which include multi-stage structures of differently connected optical filters ({75-i}, {85-i}, {95-i}), having devices for controlled adjustment of their transfer constants. The optical filters used are asymmetrical single-stage (20), two-stage (40) and/or multi-stage (60) Mach-Zehnder interferometers.
EFFECT: adding/dropping a desired channel from an optical signal by controlling spectral characteristics of filter stages of the multiplexer.
22 cl, 12 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| MULTICHANNEL OPTICAL INPUT/OUTPUT MULTIPLEXER WITH DYNAMIC FUNCTIONALITY | 2005 |
|
RU2380837C1 |
| CONTROLLED OPTICAL DEMULTIPLEXER | 2005 |
|
RU2372728C1 |
| MULTICHANNEL CONTROLLED INPUT/OUTPUT OPTICAL MULTIPLEXER | 2005 |
|
RU2372729C1 |
| CONTROLLED OPTICAL MULTIPLEXER | 2005 |
|
RU2389138C2 |
| MULTICHANNEL OPTICAL ADD/DROP MULTIPLEXER | 2012 |
|
RU2502194C1 |
| DIFFERENTIAL MULTIMODE FIBER LASER GYROSCOPE | 2020 |
|
RU2751052C1 |
| SOLID-STATE LASER GYROSCOPE | 2009 |
|
RU2421689C1 |
| DEVICE FOR RESERVATION IN FIBER-OPTICAL TRANSMISSION SYSTEMS (EMBODIMENTS) | 2017 |
|
RU2657329C1 |
| MULTIMODE FIBRE LASER GYROSCOPE | 2018 |
|
RU2708700C2 |
| SEMICONDUCTOR LASER GYROSCOPE (VERSIONS) | 2010 |
|
RU2451906C1 |
