摘要:
An optical communicating apparatus that is connected to another optical communicating apparatus by a two-core optical transmission path includes: a one-core optical transmission path that passes an optical signal transmitted from an optical transmitter/receiver performing one-core bilateral communication and an optical signal transmitted to the optical transmitter/receiver in an opposite direction; a transmitting unit that transmits the optical signal transmitted from the optical transmitter/receiver through the one-core optical transmission path, to the other optical communicating apparatus through a first core of the two-core optical transmission path; and a receiving unit that receives the optical signal transmitted from the other communicating apparatus through a second core of the two-core optical transmission path, and passes the received optical signal to the one-core optical transmission path.
摘要:
The invention provides an optical fiber amplifier which assures stable operation of a pump light source and efficiently makes use of residual pump power to achieve improvement in conversion efficiency. The optical fiber amplifier includes a rare earth doped fiber. Pump light from a pump light source is introduced into one end of the rare earth doped fiber by way of a first optical coupler, and residual pump light originating from the pump light and arriving at the other end of the rare earth doped fiber is applied to the other rare earth doped fiber amplifier or the loss compensation of a dispersion compensating fiber by Raman amplification.
摘要:
The present invention aims at providing a method for controlling wavelength characteristics of optical transmission powers by Raman amplification, in which the wavelength characteristics of optical transmission powers are automatically compensated without giving any losses to channel lights to thereby improve transmission characteristics, and an apparatus adopting the same. To this end, the method for controlling wavelength characteristics of optical transmission powers by Raman amplification according to the present invention supplies Raman pump light to an optical transmission path (Raman amplifying medium); compensates the wavelength characteristics of optical transmission powers caused by transmission of WDM signal light through the optical transmission path, by gain wavelength characteristics of generated Raman amplification; and monitors the wavelength characteristics of optical transmission powers after Raman amplification to thereby control the gain wavelength characteristics of Raman amplification.
摘要:
A method for determining gain for an optical signal includes measuring a first power level that is an output power level of an optical signal at a first optical node, communicating the optical signal to a second optical node, and communicating the first power level to the second optical node in an optical supervisory channel of the optical signal. The method further includes receiving the optical signal at the second optical node, measuring a second power level of the optical signal at the second optical node, and determining a gain for the optical signal based on the first and second power levels.
摘要:
A method for management of directly connected optical components includes receiving a source optical signal for communication to an optical network. The source optical signal comprises one or more source channels. The method includes monitoring optical traffic communicated on the optical network to determine one or more network channels of the optical traffic and determining network channel information of the one or more network channels. The method also includes communicating to the optical network channels of the one or more source channels that do not interfere with any of the one or more network channels.
摘要:
A method and a system for setting a tunable filter in an optical network are provided. In one embodiment, a method for setting a tunable filter in an optical network includes rejecting a reference wavelength using a fixed filter from an input optical signal to generate a passthrough optical signal. A tunable filter is adjusted to maintain the tunable filter at the reference wavelength. The tunable filter is adjusted to a selected wavelength based on a determination of the reference wavelength.
摘要:
A device for directing one or more optical channels includes one or more micromirror elements. A micromirror element has a mirror and a mirror controller. The mirror is operable to reflect light at a first interaction area to yield a first passband for an optical channel, and to reflect light at a second interaction area to yield a second passband for the optical channel. The mirror controller operates to position the mirror at a first position at which light interacts with the first interaction area to yield the first passband, and to position the mirror at a second position at which light interacts with the second interaction area to yield the second passband.
摘要:
An optical network includes an optical ring and a plurality of add/drop nodes coupled to the optical ring. Each of the add/drop nodes is operable to passively add and drop one or more traffic streams to and from the optical ring, and each traffic stream comprises a channel. A hub node also coupled to the optical ring is operable to selectively pass and terminate individual traffic streams.
摘要:
An optical network includes at least one Level 1 network that includes a number of interconnection nodes and one or more Level 2 networks that each include one or more access nodes. The one or more Level 2 networks are each coupled to the Level 1 network via at least one interconnection node. One or more of the access nodes are each operable to add upstream traffic to the associated Level 2 network in a sub-wavelength, each sub-wavelength comprising a portion of a wavelength associated with the Level 1 network. Furthermore, one or more of the interconnection nodes are each operable to receive upstream traffic from a number of access nodes in a number of sub-wavelengths, process the upstream traffic in the sub-wavelengths as traffic in a single wavelength associated with the Level 1 network, and forward the upstream traffic from the access nodes in the single wavelength on the Level 1 network.
摘要:
A communication system includes in-band networks, out-of-band (OOB) networks, and translating nodes. In-band data is communicated in the in-band networks in a shared channel and routed based on a destination address specified by in-band control information that is also communicated in the same shared channel as the data. OOB data is communicated in the OOB networks in an OOB data channel and routed based on control information communicated in an OOB control channel, the OOB control channel being a different channel from the OOB data channel on which the OOB data is transmitted. Translating nodes couple the OOB networks and in-band networks and are capable of translating in-band control data and in-band control information for communication in the OOB networks. The translating nodes are also capable of translating OOB control information and OOB data for communication in the in-band networks.