Light module

A technology of optical modules and lasers, which is applied in the field of optical communication, can solve the problems of difficult internal layout of optical modules, increase hardware costs, etc., achieve low-cost, and realize the effect of low-frequency signal modulation

Pending Publication Date: 2019-12-31
HISENSE BROADBAND MULTIMEDIA TECH
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  • Abstract
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Problems solved by technology

[0005] However, the above-mentioned method of adding a low-frequency optical signal transmission path and then combining light not only needs to add multiple components in the optical module, but also increases the hardware cost and brings difficulties to the internal layout of the optical module.

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solution in this embodiment with reference to the drawings in this embodiment. Obviously, the described embodiment is only a part of the embodiments of the present invention, but not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the protection scope of the present invention.

[0028] One of the core links of optical fiber communication is the conversion of photoelectric signals. Optical fiber communication uses optical signals carrying information to be transmitted in optical fibers / optical waveguides, and low-cost, low-loss information transmission can be achieved by using the passive transmission characteristics of light in optical fibers. However, information processing equipment such as computers use electrical signals, which requires mutual conversion between electrical signals and o...

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Abstract

The invention provides a light module. Specifically, a laser is arranged and is connected with a laser drive chip capable of producing current of constant power, so as to enable light of constant power output by the laser to reach an electricity absorb modulator; an edge connector is arranged and is connected with a high frequency control pin of the electricity absorb modulator, so as to modulatea high frequency light signal output by the electricity absorb modulator; and a microprocessor is arranged and is connected with a reference voltage pin of the electricity absorb modulator through a digital analog conversion chip, the microprocessor sets output values of the digital analog conversion chip, so that reference voltage applied to the electricity absorb modulator changes, then amplitude of the high frequency light signal output by the electricity absorb modulator changes along with change of low frequency signals output by the digital analog conversion ship, and the low frequency signal is modulated in high frequency signal. The light module needs only one digital analog conversion chip, so that low frequency signal can be modulated at low cost.

Description

technical field [0001] The present application relates to the technical field of optical communication, and in particular to an optical module. Background technique [0002] With the advancement of 5G network technology, higher requirements are placed on the bandwidth, delay and synchronization of the transmission bearer network, including greater mobile fronthaul and backhaul bandwidth, smaller end-to-end delay, and denser Networking and higher-precision network synchronization. The international standard G.metro (Ultra-Broadband Optical Access for Metropolitan Convergence) developed by ITU-T SG15 ((Optical and Other Transmission Network Group)) is dedicated to solving the above problems. [0003] Among them, the G.metro standard mainly regulates the wavelength-adaptive single-fiber bidirectional access WDM (Wavelength Division Multiplexing, Wavelength Division Multiplex) system based on low-cost tunable optical modules. The system is mainly composed of head end equipment ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42
CPCG02B6/428G02B6/4296
Inventor 胥嫏
Owner HISENSE BROADBAND MULTIMEDIA TECH
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