Patent Application
20250167892
The present disclosure relates generally to a circuit for connecting optical fiber for different optical communication standards and a method for operating the same.
Fiber optics is a communicating method of information transmission. Different optical communication standards such as GPON or XGPON are widely used to provide point to multipoint network to deliver broadband access to the end user via optical fiber cable. The efficient integration and automatic signal switch control of different optical communication standards at user end are needed.
Aspects and advantages of embodiments of the present disclosure will be set forth in part in the following description, or may be learned from the description, or may be learned through practice of the embodiments.
One example aspect of the present disclosure is directed to a circuit for connecting optical fiber for different optical communication standards is provided, the circuit is suitable for connecting a local optical communicating device to an external optical network. The circuit includes an optical-electrical module, a first amplifying module, a second amplifying module, a detection module, a multiplexer and a processor.
In some embodiments, the optical-electrical module connects to the external optical network to convey the optical signal via optical fiber. The optical-electrical module is configured to receive a light signal from the external optical network and split the light signal into a first optical signal complying with a first optical communication standard and a second optical signal complying with a second optical communication standard based on the different wavelength of the light signal. The optical-electrical module is configured to convert the first optical signal and the second optical signal into a first data signal and a second data signal separately, and then output the first data signal and the second data signal from different output ports of the optical-electrical module, where the first data signal and the second data signal are in form of electrical signal. Both splitting and converting are implemented by the optical-electrical module. In some embodiments, the optical signal and said light signal might be different wavelengths of different optical communication standards.
In some embodiments, the first amplifying module connects to the optical-electrical module. The first amplifying module is configured to amplify the first data signal and present a first state signal ST1 based on the first data signal. In some embodiments, once the first amplifying module received the first data signal from the optical-electrical module, the first amplifying module generates and presents the first state signal in a pin of the first amplifying module. In some embodiments, the second amplifying module connects to the optical-electrical module. The second amplifying module is configured to amplify the second data signal and present a second state signal based on the second data signal. In some embodiments, once the second amplifying module received the second data signal from the optical-electrical module, the second amplifying module generates and presents the second state signal in a pin of the second amplifying module.
In some embodiments, the detection module connects to the first amplifying module and the second amplifying module. The detection module is configured to generate a control signal to control a downstream element based on a detection result, wherein the detection result determined by the first state signal and the second state signal from the pin of the first amplifying module and the second amplifying module. In some embodiments, for example, when the first amplifying module receives the first data signal, the first amplifying module presents a pull-up state signal, and the detection result is “first data signal-on” accordingly. Then, the detection module generates a control signal indicating “first data signal-on” to a downstream element to control the said downstream element to turn on the reception of first data signal accordingly. Similarly, the control signal indicating “second data signal-on” when the second amplifying module received the second data signal, and then the detection module controls the downstream element to receive the second data signal accordingly. In some embodiments, the pull-up, pull-down, enable or disable of state signal could be exchanged. For example, the control signal could indicate “first data signal-on” when the state signal is disable. In some embodiments, the detection module could set a default detection result and following default control signal to determine which path of data signal could be received when both the state signals are in same state. In some embodiments, the control signal controls the multiplexer to output the second data signal when both the first state signal and the second state signal indicate the presence of both the first data signal and the second data signal. In some embodiments, the detection module could be implemented by a logic IC, logic circuit or any other similar module to identify the enable/disable state signal.
In some embodiments, the multiplexer connects to the detection module and the first amplifying module and the second amplifying module. The multiplexer is configured to situate as the downstream element of the detection module and output the first data signal or the second data signal selectively based on the control signal as mentioned above, and the control signal determines the switch (turn on/off) of the first data signal or the second data signal at the multiplexer according to the state signals.
In some embodiments, the processor connects to the multiplexer and is configured to receive the first data signal or the second data signal which are selected by the detection module via the multiplexer. Also, the processor is capable of processing both the first data signal and the second data signal. In some embodiments, the processor connects to a local optical communicating device, such as scriber device or computer, server, etc. In some embodiments, the processor could be a system-on-chip (SoC).
In some embodiments, the first optical communication standard is the GPON optical communication standard and the second optical communication standard is the XGPON optical communication standard.
In some embodiments, the first amplifying module further integrated with a first laser diode driver, and wherein the second amplifying module further integrated with a second laser diode driver.
In some embodiments, the optical-electrical module is a bidirectional optical sub-assembly (BOSA) or Combo BOSA/QOSA.
In some embodiments, wherein the control signal controls the multiplexer to output the second data signal when both the first state signal and the second state signal indicate the presence of both the first data signal and the second data signal.
In some embodiments, wherein the first state signal indicates the presence of the first data signal by pulling low its voltage level.
Another example aspect of the present disclosure is directed to a method for connecting optical fiber for different optical communication standards. The method includes: receiving, by an optical-electrical module, a light signal from an external network; splitting, by the optical-electrical module, the light signal into a first optical signal and a second optical signal based on the different wavelength of the light signal; converting, by the optical-electrical module, the first optical signal and the second optical signal into a first data signal and a second data signal separately; and controlling, by a detection module, a multiplexer to output the first data signal or the second data signal selectively based on a detection result according to a first state signal and a second state signal, wherein the first state signal indicating the presence of the first data signal and the second state signal indicating the presence of the second data signal.
According to the embodiments of the present disclosure, the circuit and the method can control and switch a GPON receiving mode or a XGPON receiving mode automatically based on the optical signals from the optical fiber by using a detection module situated upstream from a multiplexer. Based on the hardware feature of the detection module and the feature of independent arrangement of the detection module, it also simplifies the design of said connecting circuit. The circuit and the method significantly increase the flexibility of the local optical communicating device.
These and other features, aspects and advantages of various embodiments will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure, and together with the description, serve to explain the related principles.
To facilitate understanding of the object, characteristics and effects of this present disclosure, embodiments together with the attached drawings for the detailed description of the present disclosure are provided.
In the present disclosure, the circuit for connecting optical fiber for different optical communication standards and the method for operating the same are provided. The circuit and the method can control and switch the receiving mode for different optical communication standards automatically based on the optical signals from the optical fiber by using a detection module situated upstream from a multiplexer.
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Similarly, the second amplifying module 220 connects to the optical-electrical module 100. The second amplifying module 220 is configured to amplify the second data signal DS2 and present a second state signal ST2 based on the second data signal DS2. In some embodiments, once the second amplifying module 220 received the second data signal DS2 from the optical-electrical module 100, the second amplifying module 220 generates and presents the second state signal ST2 in a pin of the second amplifying module 220.
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Another example aspect of the present disclosure is directed to a method for connecting optical fiber for different optical communication standards. The method includes operation S410 to S440. In S410, receiving, by an optical-electrical module, a light signal from an external network. In S420, splitting, by the optical-electrical module, the light signal into a first optical signal and a second optical signal based on the different wavelength of the light signal. In S430, converting, by the optical-electrical module, the first optical signal and the second optical signal into a first data signal and a second data signal separately. In S440, controlling, by a detection module, a multiplexer to output the first data signal or the second data signal selectively based on a detection result according to a first state signal and a second state signal, wherein the first state signal indicating the presence of the first data signal and the second state signal indicating the presence of the second data signal.
According to the embodiments of the present disclosure, the circuit for connecting optical fiber for different optical communication standards and the method for operating the same are provided. The circuit and the method can control and switch a GPON receiving mode or a XGPON receiving mode automatically based on the optical signals from the optical fiber by using a detection module situated upstream from a multiplexer. The hardware feature of the detection module and the feature of independent arrangement of the detection module also simplify the design of said connecting circuit. The circuit and the method significantly increase the flexibility of the local optical communicating device.
The present disclosure is described by way of the multiple embodiments above. A person skilled in the art should understand that, these embodiments are merely for describing the present disclosure are not to be construed as limitations to the scope of the present disclosure. It should be noted that all equivalent changes, replacements and substitutions made to the embodiments are to be encompassed within the scope of the present disclosure. Therefore, the scope of protection of the present disclosure should be accorded with the broadest interpretation of the appended claims.
