In the examples provided herein, a system has a plurality of arrayed waveguide gratings (AWG) having a plurality of input ports and a plurality of output ports. A signal within a given wavelength channel transmitted to one of the input ports of a given AWG is routed to one of the output ports of the given AWG based on a signal wavelength. The system also has a plurality of nodes, with each node comprising a set of components for each AWG that the node is coupled to. Each set of components comprises a plurality of optical transmitters, where each optical transmitter is tunable over multiple wavelength channels within a different wavelength band; a band multiplexer to multiplex the multiple wavelength channels within each different wavelength band; and a first output fiber to couple an output of the band multiplexer to one of the input ports of a first AWG.

An optoelectronic device and method of making the same. The device comprising: a substrate; an epitaxial crystalline cladding layer, on top of the substrate; and an optically active region, above the epitaxial crystalline cladding layer; wherein the epitaxial crystalline cladding layer has a refractive index which is less than a refractive index of the optically active region, such that the optical power of the optoelectronic device is confined to the optically active region.

Embodiments of the invention describe apparatuses, optical systems, and methods for utilizing a dynamically reconfigurable optical transmitter. A laser array outputs a plurality of laser signals (which may further be modulated based on electrical signals), each of the plurality of laser signals having a wavelength, wherein the wavelength of each of the plurality of laser signals is tunable based on other electrical signals. An optical router receives the plurality of (modulated) laser signals at input ports and outputs the plurality of received (modulated) laser signals to one or more output ports based on the tuned wavelength of each of the plurality of received laser signals. This reconfigurable transmitter enables dynamic bandwidth allocation for multiple destinations via the tuning of the laser wavelengths.

A method for establishing bidirectional communication links includes: supplying, to at least two optical transceiver modules at each side of at least two optical paths, a multiplexed optical CW signal comprising at least two optical CW signals having the same differing wavelengths, and modulating the multiplexed optical CW signal according to modulation signals; creating, at each side of the optical paths, at least two first and second optical transmit signals by optically filtering the modulated optical signals so that only a single wavelength remains, and routing pairs of a first and second optical transmit signal to the optical paths, wherein the optical transmit signals of each pair have differing wavelengths and wherein the optical transmit signals transmitted in the same direction over the same optical paths have differing wavelengths; receiving each optical transmit signals at a dedicated optical transceiver module by mixing it with the multiplexed optical CW signal.

A method for establishing bidirectional communication links includes: supplying, to at least two optical transceiver modules at each side of at least two optical paths, a multiplexed optical CW signal comprising at least two optical CW signals having the same differing wavelengths, and modulating the multiplexed optical CW signal according to modulation signals; creating, at each side of the optical paths, at least two first and second optical transmit signals by optically filtering the modulated optical signals so that only a single wavelength remains, and routing pairs of a first and second optical transmit signal to the optical paths, wherein the optical transmit signals of each pair have differing wavelengths and wherein the optical transmit signals transmitted in the same direction over the same optical paths have differing wavelengths; receiving each optical transmit signals at a dedicated optical transceiver module by mixing it with the multiplexed optical CW signal.

An intelligent subsystem includes a system-on-chip (comprising a microprocessor/graphic processor), a radio transceiver, a voice processing module/voice processing algorithm and an intelligent learning algorithm. The intelligent subscriber subsystem can respond to a user's interests and/or preferences. Furthermore, the intelligent subscriber subsystem is sensor-aware or context-aware.

According to one example, the present application discloses an optical circuit comprising a grating to receive input light of mixed polarizations and output light of a same polarization to a first waveguide and a second waveguide. The first waveguide and second waveguide are optically coupled to a plurality of resonators that are coupled to a plurality of gratings that are to output light of mixed polarizations.

Systems and methods for providing transmission and reception of hybrid time and wavelength division multiplexed signals on passive optical networks are provided. Networks that use shared transmission media avoid interference between transmitters by restricting the times or wavelengths that given transmitters may use to transmit their messages. The hybrid broadcast WDM TDM PON architecture enables transmitters to use multiple fixed wavelengths for parallel optical transmission within given timeslots to avoid interference with other transmitters and make use of inexpensive fixed optical components to gain a speed advantage over existing architectures while making use of their deployed infrastructure. A single scheduling manager controls the timeslots of upstream and downstream transmissions, which make use of existing standards.

A communication system, a transmitter, and a communication method. The communication system includes M transmitters, N receivers, and an optical switch network. Both N and M are positive integers greater than 1. The optical switch network includes one or more optical switches. A plurality of optical paths are configured in the optical switch network. When the transmitter communicates with the receiver, the transmitter can determine, from the plurality of optical paths, a target optical path from a source communication node to a destination communication node. After the optical switch network receives a target optical signal sent by the transmitter, the optical switch directly sends the target optical signal to the receiver based on the target optical path.

Provided are an optical transmission module including: a mold body having a first surface and a second surface opposite to the first surface; edge-type light emitting elements, each of which is molded inside the mold body by fitting same to the first surface so as to match with the first surface and generates an optical signal in an edge direction of a chip; and an optical component disposed on one side of the edge-type light emitting elements and molded inside the mold body, the optical component includes, on one side thereof, a plurality of input waveguides corresponding to the edge-type light emitting elements, and optically processes or transmits the plurality of optical signals incident through the plurality of input waveguides, and an optical axis of each of the light emitting elements and an optical axis of each of the input waveguides of the optical component is optically aligned.