An uplink burst optical transmitter with constant-temperature control wavelength adjustability

A technology of constant temperature control and optical transmitter, which is applied in the field of cable television HFC two-way communication to achieve high temperature adjustment efficiency and reduce temperature loss

Pending Publication Date: 2019-05-03
杭州万隆光电设备股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In addition, this model adopts a single WDM wavelength design, and provides 16 variable wavelengths with an interval of 0.25nm on the basis of the nominal wavelength. Because the accuracy of wavelength control is not enough and the interval of 0.25nm is smaller, in practical applications There may also be two adjacent wavelengths separated by less than 0.1nm due to temperature changes, resulting in OBI

Method used

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  • An uplink burst optical transmitter with constant-temperature control wavelength adjustability
  • An uplink burst optical transmitter with constant-temperature control wavelength adjustability

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Embodiment

[0020] Such as figure 1 The shown upstream burst mode optical transmitter with constant temperature control and adjustable wavelength includes a central processing unit CPU, a semiconductor cooler TEC control circuit, an integrated laser BOSA component, and an automatic power control circuit APC and RFoG control circuits. The above-mentioned integrated laser BOSA assembly includes a micro-TEC semiconductor refrigerator, a thermistor RT, a laser laser, a backlight detector MPD, a downlink photodetector PD and a wavelength division multiplexer WDM. The central processing unit CPU is located in the whole The front end of the computer system is responsible for the issuance and storage of the wavelength preset value. The central processor sends instructions to the TEC control circuit of the semiconductor cooler, and the TEC control circuit of the semiconductor cooler outputs a pulse width signal voltage to control the semiconductor cooler. The working current of the TEC makes the s...

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Abstract

The invention discloses an uplink burst mode optical transmitter with constant temperature control wavelength adjustability. The uplink burst mode optical transmitter discloses a CPU, a TEC control circuit of a semiconductor cooler, an Integrated laser BOSA assembly, an Automatic power control circuit APC and an RFoG control circuit; the integrated laser BOSA assembly comprises a miniature TEC semiconductor cooler, a thermistor RT, a laser Lasser, a backlight detector MPD, a downlink optical detector PD and a wavelength division multiplexer WDM. The TEC is arranged in the BOSA assembly and directly acts on the laser, no conducting medium passes through the middle of the BOSA assembly, the temperature adjusting efficiency is very high, meanwhile, due to the fact that temperature loss is greatly reduced, the consumed power source power is also as low as 1W, and the BOSA assembly has very advantages in the aspect of energy conservation, and meanwhile, the hidden danger of OBI generation is eliminated.

Description

technical field [0001] The invention belongs to the field of cable TV HFC two-way communication, and is especially suitable for an uplink burst mode optical transmitter of a two-way communication network based on a DOCSIS+PON architecture, which is applied to an uplink transmission link and eliminates optical beat interference (OBI). Background technique [0002] In the current cable TV HFC (Hybrid Fiber Coaxial Network) network environment where "light enters and copper exits", the two-way FTTH (fiber to the home) and FTTB (fiber to the building) using the DOCSIS+PON solution for the last mile are now and even The general trend of future development. When the existing traditional HFC network based on the DOCSIS solution realizes two-way transmission, due to the funnel noise aggregation problem existing in the uplink distribution network when the equipment increases, the two-way network faces a huge communication technology bottleneck. At this time, RFoG (RF over Glass) tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/50G02B6/42H01S3/04H01S3/042
Inventor 许泉海赖玮炜
Owner 杭州万隆光电设备股份有限公司
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