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Bidirectional communication module

A technology of communication module and local communication module, applied in the field of two-way communication module, can solve the problem of expensive

Active Publication Date: 2019-01-04
FINISAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This architecture may require a more extensive and / or more expensive communication module inventory than a WDM architecture with channel allocation limited to C-band

Method used

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  • Bidirectional communication module
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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0026] figure 1 Illustrated is an exemplary optical communication system 100 (hereinafter "system 100") that implements wavelength division multiplexing (WDM) to bidirectionally transmit multiple optical components across an optical fiber 102 between multiple communication modules 104, 106. signal.in figure 1 As in other figures herein, the direction passing through the optical fiber 102 from left to right is arbitrarily referred to as east, and the direction passing through the optical fiber 102 from right to left is arbitrarily referred to as west. As used herein, east and west do not necessarily refer to cardinal directions, but are used as convenient shorthand to designate the relative direction and / or orientation of components with respect to each other.

[0027] exist figure 1 In the example of , the system 100 includes 40 communication modules 104 , 106 at each of the two ends of the optical fiber 102 . Specifically, in figure 1 In the example of , the system 100 in...

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Abstract

In an example, a communication module includes an optical transmitter, an optical receiver, and a periodical filter. The optical transmitter is configured to emit an outbound optical signal. The optical receiver is configured to receive an inbound optical signal. A first frequency of the outbound optical signal is offset from a second frequency of the inbound optical signal by an amount less thana channel spacing of a multiplexer / demultiplexer implemented in an optical communication system that includes the communication module. The periodical filter is positioned in optical paths of both theoutbound optical signal and the inbound optical signal and has a transmission spectrum with periodic transmission peaks and troughs. The first frequency of the outbound optical signal may be alignedto one of the transmission peaks and the second frequency of the inbound optical signal may be aligned to one of the transmission troughs, or vice versa.

Description

[0001] Cross References to Related Art [0002] This application claims the benefit of and priority to U.S. Provisional Application No. 62 / 311,782, filed March 22, 2016, the entire contents of which are incorporated herein by reference. technical field [0003] Embodiments discussed herein relate to two-way (two-way) communication modules and systems. Background technique [0004] Unless otherwise indicated herein, the materials described herein are not prior art to the claims in this application and are not admitted to be prior art by inclusion in this section. [0005] Some optical communication systems implement wavelength division multiplexing (WDM), where multiple optical signals on different wavelength / frequency channels are transmitted over the same optical fiber. One type of WDM architecture is a 2-fiber WDM ring, in which a first set of multiple optical signals traveling in a certain direction (arbitrarily referred to herein as eastbound optical signals) is carried...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J14/02
CPCH04J14/0265H04J14/0279H04B10/50H04B10/60H04B10/2589
Inventor 林右宇舒华德李惠萍张力曾珊珊李广生
Owner FINISAR