Abstract: The present application provides an optical port auto-negotiation method, including: a: selecting a downstream to-be-received wavelength; b: listening to a downstream message on the selected downstream to-be-received wavelength, performing c if a wavelength idle message is received, and returning to a if no wavelength idle message is received within a specified or fixed time, where the wavelength idle message is used to identify that the wavelength is not occupied or not allocated; c: sending a wavelength application message on an upstream wavelength, performing d if a wavelength grant message is received in a downstream direction; otherwise, going back to a or b, where the wavelength application message is used to identify a request for allocation of the wavelength, and the wavelength grant message is used to identify acknowledgment of wavelength allocation; and d: setting an optical port auto-negotiation success flag bit. The present application further provides an optical module.

Abstract: An optical network termination (ONT) receives an uplink message, the ONT includes a virtual local area network (VLAN) tagging operation configuration data managed entity (ME) with a VLAN tagging operation table, and each entry of the VLAN tagging operation table includes a group of operation value fields and a group of filter value fields including an outer layer VLAN priority filter value, an outer layer VID filter value, an inner layer VLAN priority filter value and an inner layer VID filter value. The ONT filters the received uplink message according to a characteristic value of the received uplink message by using at least one of the above values in a corresponding entry of the VLAN tagging operation table. The ONT performs a VLAN tagging operation for the filtered o uplink message.

Abstract: The present application provides an optical port auto-negotiation method, including: a: selecting a downstream to-be-received wavelength; b: listening to a downstream message on the selected downstream to-be-received wavelength, performing c if a wavelength idle message is received, and returning to a if no wavelength idle message is received within a specified or fixed time, where the wavelength idle message is used to identify that the wavelength is not occupied or not allocated; c: sending a wavelength application message on an upstream wavelength, performing d if a wavelength grant message is received in a downstream direction; otherwise, going back to a or b, where the wavelength application message is used to identify a request for allocation of the wavelength, and the wavelength grant message is used to identify acknowledgment of wavelength allocation; and d: setting an optical port auto-negotiation success flag bit. The present application further provides an optical module.

Abstract: An optical component packaging structure includes a base, a sealing cover, and a cooler. The base includes a mounting surface and a back surface that faces a direction opposite to that faced by the mounting surface. The cooler includes a cooling plate, a heat dissipation plate disposed opposite to the cooling plate, and a conductive connection body connecting the cooling plate and the heat dissipation plate. The cooling plate includes a cooling surface. The cooler is partially built in the base. The cooling plate faces a direction the same as the mounting surface. The sealing cover covers the mounting surface, and the sealing cover and the mounting surface form a sealing cavity. The cooling surface is located inside the sealing cavity. The heat dissipation plate protrudes from the back surface and is sealedly connected to the base.

Abstract: The present application provides an optical port auto-negotiation method, including: a: selecting a downstream to-be-received wavelength; b: listening to a downstream message on the selected downstream to-be-received wavelength, performing c if a wavelength idle message is received, and returning to a if no wavelength idle message is received within a specified or fixed time, where the wavelength idle message is used to identify that the wavelength is not occupied or not allocated; c: sending a wavelength application message on an upstream wavelength, performing d if a wavelength grant message is received in a downstream direction; otherwise, going back to a or b, where the wavelength application message is used to identify a request for allocation of the wavelength, and the wavelength grant message is used to identify acknowledgment of wavelength allocation; and d: setting an optical port auto-negotiation success flag bit. The present application further provides an optical module.

Abstract: Embodiments of the present disclosure disclose a signal transmission method, an apparatus, and a system. The method includes: receiving, by a first mode multiplexer, a first optical signal by using each input port; generating, by the first mode multiplexer, a second optical signal according to a correspondence between the input port and a mode group, where the second optical signal is an optical signal in any mode of the mode group corresponding to the input port, and one input port corresponds to one mode group; and outputting, by the first mode multiplexer, the second optical signal. In the embodiments of the present disclosure, a transmission capacity of a single fiber is increased to implement big data transmission, thereby implementing fast transmission capacity expansion, and improving utilization of overall system bandwidth.

Abstract: An optical device (501) is disclosed, including a spatial multiplexer/demultiplexer (520) and an optical splitter (510). The optical splitter (510) is an M:N optical splitter, M is greater than or equal to 2, and N is greater than or equal to M. M is a quantity of common ports of the optical splitter (510), and N is a quantity of drop ports of the optical splitter (510). The spatial multiplexer/demultiplexer (520) includes one common port (521) and M drop ports (522-1 to 522-M). The M drop ports of the spatial multiplexer/demultiplexer (520) are connected to the M common ports of the optical splitter (510). The common port (521) of the spatial multiplexer/demultiplexer (520) has a capability of transmitting optical signals in multiple spatial modes.

Abstract: The present invention provides an optical module and an optical network system. A first chip is arranged on a lower cover plate, an upper cladding, which is close to a first PD, of the first chip is covered by a first upper cover plate; a first dividing groove divides the first chip into two parts, and a WDM and a light blocking material are arranged inside the first dividing groove, so as to block stray light transmitted inside the upper cladding, a sandwich layer, a lower cladding, and a base of the first chip; and a light blocking material is arranged on a side of the first upper cover plate facing the first LD, so as to block stray light transmitted on a surface of the first chip, thereby blocking the stray light that enters the first PD, and significantly reducing crosstalk of the optical module.

Abstract: An optical network termination (ONT) receives an uplink message, the ONT includes a virtual local area network (VLAN) tagging operation configuration data managed entity (ME) with a VLAN tagging operation table, and each entry of the VLAN tagging operation table includes a group of operation value fields and a group of filter value fields including an outer layer VLAN priority filter value, an outer layer VID filter value, an inner layer VLAN priority filter value and an inner layer VID filter value. The ONT filters the received uplink message according to a characteristic value of the received uplink message by using at least one of the above values in a corresponding entry of the VLAN tagging operation table. The ONT performs a VLAN tagging operation for the filtered o uplink message.

Abstract: The present invention discloses a message processing method of optical network termination (ONT), including: the ONT receiving an uplink message; the ONT performing a corresponding VLAN tagging operation in accordance with the characteristic value of the uplink message, wherein at least two types of uplink messages with different characteristic values have different VLAN Tags after the uplink messages are processed by the ONT. The present invention also discloses a VLAN Tag processing apparatus, an optical network termination (ONT), and a passive optical network system, which enable subsequent network devices to process the messages from the ONT in diverse ways.

Abstract: A method for optical network termination (ONT) configuration is provided. The method includes: obtaining, by an optical line terminal (OLT), service types supported by an ONT and management methods available for each of the service types; and negotiating, by the OLT, with the ONT according to the management methods available for each of the service types, so as to determine a management method to be adopted for each of the service types, and configuring the ONT according to the determined management method.

Abstract: The present application provides an optical port auto-negotiation method, including: a: selecting a downstream to-be-received wavelength; b: listening to a downstream message on the selected downstream to-be-received wavelength, performing c if a wavelength idle message is received, and returning to a if no wavelength idle message is received within a specified or fixed time, where the wavelength idle message is used to identify that the wavelength is not occupied or not allocated; c: sending a wavelength application message on an upstream wavelength, performing d if a wavelength grant message is received in a downstream direction; otherwise, going back to a or b, where the wavelength application message is used to identify a request for allocation of the wavelength, and the wavelength grant message is used to identify acknowledgment of wavelength allocation; and d: setting an optical port auto-negotiation success flag bit. The present application further provides an optical module.

Abstract: A passive optical network (PON) component comprising a power switch, a detector configured to monitor the power switch, and a processor configured to receive an interrupt from the detector and transmit a message comprising a first indicator that the PON component has powered down, and a second indicator giving a reason for the power down. A passive optical network (PON) component comprising a processor configured to implement a method comprising receiving an interrupt message from a detector, determining a reason for the interrupt, and transmitting a dying gasp message comprising an indicator of the reason for the interrupt. A method comprising transmitting an alarm message comprising an optical network terminal (ONT) manual power off indicator that indicates the ONT is shutting down because a subscriber has turned off its power switch.

Abstract: The present invention provides an optical module and an optical network system. A first chip is arranged on a lower cover plate, an upper cladding, which is close to a first PD, of the first chip is covered by a first upper cover plate; a first dividing groove divides the first chip into two parts, and a WDM and a light blocking material are arranged inside the first dividing groove, so as to block stray light transmitted inside the upper cladding, a sandwich layer, a lower cladding, and a base of the first chip; and a light blocking material is arranged on a side of the first upper cover plate facing the first LD, so as to block stray light transmitted on a surface of the first chip, thereby blocking the stray light that enters the first PD, and significantly reducing crosstalk of the optical module.

Abstract: Embodiments of the present invention disclose a fiber recognition method, an optical line terminal, and a system. The method includes: obtaining, by an optical line terminal, identification information of a fiber connected to an optical line terminal and to be recognized; generating, by the optical line terminal, a data frame that includes the identification information of the fiber to be recognized; transmitting, by the optical line terminal, optical signals that are generated according to the data frame to the fiber to be recognized, so as to make a fiber recognition instrument implement identification for the fiber to be recognized. The present invention can implement fiber recognition easily and conveniently. When a new ONU user is added to a distributed network, service interruption can also be avoided for a user who is normally using a service, and the cost is low.

Abstract: Embodiments of the present disclosure describe a method and an apparatus for testing an optical network, which may be applicable to an integrated OTDR and the field of optical network technologies. The method includes obtaining a maximum test time of a single group test; dividing a total test time into at least two groups of single group test time that is not greater than the maximum test time when the total test time is greater than the maximum test time of the single group test; performing the single group tests in sequence according to each single group test time; and instructing optical network equipment to restore to a normal working state when the single group test time corresponding to each single group test ends.

Abstract: The present disclosure provides a time synchronization method, including: acquiring, by a slave device, a first optical fiber transmission delay from a master device to the slave device, and a second optical fiber transmission delay from the slave device to the master device; exchanging a time synchronization signal with the master device, and calculating an initial time offset; adjusting the initial time offset by using the first optical fiber transmission delay and the second optical fiber transmission delay to obtain a corrected time offset; and adjusting a local clock according to the corrected time offset. Embodiments of the present disclosure further provide a corresponding device and system.

Abstract: A method for optical network termination (ONT) configuration is provided. The method includes: obtaining, by an optical line terminal (OLT), service types supported by an ONT and management methods available for each of the service types; and negotiating, by the OLT, with the ONT according to the management methods available for each of the service types, so as to determine a management method to be adopted for each of the service types, and configuring the ONT according to the determined management method.

Abstract: A method can be used for controlling optical power. Output optical power of an optical source is monitored and it is determined whether a preset test control signal is received. When the preset test control signal is not received, a data signal is modulated to output light of the optical source and a bias current of the optical source is adjusted according to an output optical power monitoring result of the optical source to implement automatic power control. When the preset test control signal is received, a test is started and a test signal is superimposed to the data signal to form a superimposed signal. The superimposed signal is modulated to the output light of the optical source. The output optical power monitoring result of the optical source is ignored during the test period to maintain the bias current of the optical source at a preset target value.

Abstract: A method for optical network termination (ONT) configuration is provided. The method includes: obtaining, by an optical line terminal (OLT), service types supported by an ONT and management methods available for each of the service types; and negotiating, by the OLT, with the ONT according to the management methods available for each of the service types, so as to determine a management method to be adopted for each of the service types, and configuring the ONT according to the determined management method.