A communication network that employs a plurality of multi endpoint (MEP) optical
transceivers in a leaf (or function ally similar) layer thereof. The use of MEP optical trans …

Abstract Systems and methods of sharing optical spectrum between a plurality of users of a
submarine optical system includes receiving one or more optical signals from the plurality of …

Abstract An optical transmission apparatus (1_1) according to the present invention includes
a first transmission unit (11_1) that transmits a first optical transmission signal (21_1), a …

Optical network systems and components are disclosed, including a transmitter comprising a
digital signal processor receiving a plurality of independent data streams, and supplying a …

BACKGROUND Wavelength division multiplexed (WDM) optical com munication systems
(referred to as “WDM systems) are systems in which multiple optical signals, each having a …

(57) ABSTRACT An optical transmission apparatus (1_1) according to the present invention
includes a first transmission unit (11_1) that transmits a first optical transmission signal …

We disclose an optical add-drop multiplexer that can apply different routing operations to
different subcarriers of a data frame. In an example embodiment, the digital signal processor …

A method for wavelength conversion comprising receiving an input optical signal with a first
wavelength, converting the input optical signal to a plurality of input analog signals …

Techniques are described for implementing an out-of-band communication channel used to
exchange control channel information in sub-carrier-based optical communication systems …

A network or system in which a hub or primary node may communicate with a plurality of leaf
or secondary nodes. The hub node may operate or have a capacity greater than that of the …