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Low cost intensity-modulated direct-detection (IMDD) optical transmitter and receiver

A technology for modulating light and transmitters, which is applied in the direction of electromagnetic transmitters, electromagnetic receivers, electromagnetic transceivers, etc., to achieve the effect of increasing dispersion tolerance

Active Publication Date: 2020-05-19
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, for transmission at 50Gbps or higher, due to dispersion, the propagation distance on the most commonly used non-dispersion-shifted single-mode fiber (G.652) is limited to a few kilometers

Method used

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  • Low cost intensity-modulated direct-detection (IMDD) optical transmitter and receiver
  • Low cost intensity-modulated direct-detection (IMDD) optical transmitter and receiver
  • Low cost intensity-modulated direct-detection (IMDD) optical transmitter and receiver

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Embodiment Construction

[0032] The construction, making and use of the presently preferred embodiments are discussed in detail hereinafter. It should be appreciated, however, that the present disclosure provides many applicable inventive concepts that can be implemented in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.

[0033] Embodiments of the present invention provide a low-cost solution to solve inherent problems in optical transmission systems, especially in high-speed, long-distance data transmission. As mentioned above, non-coherent systems have the advantages of low cost, small footprint and low power consumption, but have the disadvantage of low dispersion tolerance. In this embodiment, single sideband transmission is used to greatly increase dispersion tolerance in non-coherent systems. In this embodiment, a single periodic optical filter is also u...

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Abstract

An embodiment method includes multiplexing light emitted by the plurality of optical transmitters to provide a multiplexed optical signal; propagating the multiplexed optical signal through an opticalinterleaver from a first port thereof to a combined port thereof and back to a second port thereof; and detecting an optical signal at the second port of the optical interleaver.

Description

[0001] Related Applications Cross Application [0002] This application claims prior application priority to U.S. Provisional Application No. 62 / 569,402, filed October 6, 2017, entitled "Low-Cost Intensity Modulation and Direct Detection (IMDD) Optical Transmitter and Optical Receiver" , and prior application priority to U.S. Nonprovisional Application No. 15 / 995,175, filed June 1, 2018, entitled "Low-Cost Intensity Modulation and Direct Detection (IMDD) Optical Transmitter and Optical Receiver" , the content of this prior application is incorporated herein by reference. technical field [0003] The present invention relates to a method and system for optical data transmission and, in particular embodiments, to a low-cost Intensity-Modulation Direct-Detection (IMDD) transceiver. Background technique [0004] Due to the need for data transmission at a rate of 50 gigabits per second (Gbps) or higher over a distance of more than 10 kilometers (kilometer, km), several types of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/25
CPCH04B10/0775H04B10/506H04B10/5165H04B10/572H04B10/675H04J14/0256H04J14/0276H04B10/40H04B10/50H04B10/54H04B10/548H04B10/60H04J14/0265
Inventor 蒋志平汤学峰张筑虹
Owner HUAWEI TECH CO LTD
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