Multiplexing transmitter
AssigneeFujitsu Limited
InventorKatsuyuki Tada
Life of this patent
Estimating the term…
Abstract
An optical multiplexing transmitter having functions for dropping or demultiplexing an optional time slot of a channel of a high-ordered group to optional channels of a low-ordered group channels and adding and multiplexing optional time slots of a low-ordered group to a channel of the high-ordered group in the reversed direction also referred as to an add/drop cross connect function. The optical multiplexing transmitter further, for may loopback optional time slots of the low-ordered group to optional channels of the low-ordered group also referred to as a hair pin cross connecting function.
Claims12
An optical multiplexing transmitter located on a first ring transmission line of a high-ordered channel group, comprising:
- a multiplexing and demultiplexing section operatively connected to a transmission line of the high- ordered channel group for multiplexing optional time slots of a low-ordered channel group and demultiplexing optional time slots of the high-ordered channel group;
- a terminator operatively connected to an external transmitter of the low-ordered channel group, which is connected via a transmission line to an opposing transmitter located on a second ring transmission line of a high-ordered channel group;
- and
- a cross connect section for connecting optional time slots demultiplexed by the multiplexing and demultiplexing section, of the high-ordered channel group to optional time slots of the low-ordered channel via the terminator, and optional time slots of the low-ordered channel group to the multiplexing and demultiplexing section to multiplex to the high-ordered group channel, and setting to turn and connect an optional time slot of said low-ordered channel group back to an optional channel of the low-ordered channel group via the terminator in the form of a hair pin cross connection.
Dependencies are inferred from the claim text.