A skew compensation system for a coherent optical communication network includes a transmitter modulator having a first driver input for receiving a first signal from a first channel, a second driver input for receiving a second signal from a second channel, a source input for receiving a continuous wave source signal, and a modulation output in communication with an optical transport medium of the network. The system further includes a tunable delay line disposed between the second channel and the second driver input for inserting a pre-determined training sequence onto the second signal prior to the second driver input, and a processor for determining a skew amount between the second signal at the second driver input and the first signal at the first driver input, calculating a pre-compensation value corresponding to the skew amount, and reducing the skew amount at the modulation output according to the pre-compensation value.

A skew compensation system for a coherent optical communication network includes a transmitter modulator having a first driver input for receiving a first signal from a first channel, a second driver input for receiving a second signal from a second channel, a source input for receiving a continuous wave source signal, and a modulation output in communication with an optical transport medium of the network. The system further includes a tunable delay line disposed between the second channel and the second driver input for inserting a pre-determined training sequence onto the second signal prior to the second driver input, and a processor for determining a skew amount between the second signal at the second driver input and the first signal at the first driver input, calculating a pre-compensation value corresponding to the skew amount, and reducing the skew amount at the modulation output according to the pre-compensation value.

A dark fiber dense wavelength division multiplexing service path design microservice (ddSPDmS) can provide a scalable self-contained meta-data driven approach for a flexible implementation of a dark fiber dense wavelength division multiplexing (DWDM) service path design solution. The service plan design solution can be used as a standalone solution or integrated with a network management application. In order to manage a large volume of circuit designs, multiple microservices can accept application program interface (API) requests in a cloud environment. Permission can then be given to any application to use the API to make a call to the design and inventory. Additionally, metadata templates can be designed to support a node, a link, and/or a topology for the microservices.

A dark fiber dense wavelength division multiplexing service path design microservice (ddSPDmS) can provide a scalable self-contained meta-data driven approach for a flexible implementation of a dark fiber dense wavelength division multiplexing (DWDM) service path design solution. The service plan design solution can be used as a standalone solution or integrated with a network management application. In order to manage a large volume of circuit designs, multiple microservices can accept application program interface (API) requests in a cloud environment. Permission can then be given to any application to use the API to make a call to the design and inventory. Additionally, metadata templates can be designed to support a node, a link, and/or a topology for the microservices.

A method can be used to synchronize time between nodes of a converter device for high voltage power conversion. The method is performed in a first node of the converter device and includes receiving a time reference from a second node of the converter device, obtaining a delay value for receiving time references from the second node, determining a compensated time by adding the delay value to the time reference, and setting a clock in the first node to be the compensated time.

A method can be used to synchronize time between nodes of a converter device for high voltage power conversion. The method is performed in a first node of the converter device and includes receiving a time reference from a second node of the converter device, obtaining a delay value for receiving time references from the second node, determining a compensated time by adding the delay value to the time reference, and setting a clock in the first node to be the compensated time.

Disclosed herein are network elements for use in a transport network. The network elements may comprise an embedded device comprising a processor, a communication device, and a non-transitory computer readable medium storing a common client interface comprising processor-executable code that when executed causes the processor to, responsive to receiving a request from a particular one of a plurality of client applications: allocate one or more system resource for the particular one of the plurality of client applications, the one or more system resource based at least in part on a request type of the request; establish, with the communication device, a connection with a remote network element in the transport network; and transmit the request to the remote network element; and responsive to receiving a response from the remote network element, transmit the response to the particular one of the plurality of client applications.

Disclosed herein are network elements for use in a transport network. The network elements may comprise an embedded device comprising a processor, a communication device, and a non-transitory computer readable medium storing a common client interface comprising processor-executable code that when executed causes the processor to, responsive to receiving a request from a particular one of a plurality of client applications: allocate one or more system resource for the particular one of the plurality of client applications, the one or more system resource based at least in part on a request type of the request; establish, with the communication device, a connection with a remote network element in the transport network; and transmit the request to the remote network element; and responsive to receiving a response from the remote network element, transmit the response to the particular one of the plurality of client applications.

An optical coupling apparatus is disclosed, including: a monochromatic light source configured to emit monochromatic light; a monochromatic light photodetector configured to receive the monochromatic light; and a monochromatic light transmission medium, wherein at least a portion of the monochromatic light transmission medium is disposed between the monochromatic light source and the monochromatic light photodetector, and the monochromatic light is transmitted to the monochromatic light photodetector via the monochromatic light transmission medium, wherein a wavelength of the monochromatic light is shorter than a wavelength of infrared light. Embodiments of the present disclosure provide an optical coupling apparatus with a higher upper limit of operating frequency, which may better meet user requirements.

An optical coupling apparatus is disclosed, including: a monochromatic light source configured to emit monochromatic light; a monochromatic light photodetector configured to receive the monochromatic light; and a monochromatic light transmission medium, wherein at least a portion of the monochromatic light transmission medium is disposed between the monochromatic light source and the monochromatic light photodetector, and the monochromatic light is transmitted to the monochromatic light photodetector via the monochromatic light transmission medium, wherein a wavelength of the monochromatic light is shorter than a wavelength of infrared light. Embodiments of the present disclosure provide an optical coupling apparatus with a higher upper limit of operating frequency, which may better meet user requirements.