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A tunable optical receiver and its tunable filter applied to twdm-pon system

A technology of TWDM-PON and receiver, applied in the field of optical communication, can solve the problems of unfavorable batch production, high equipment dependence, large line dispersion, etc., and achieve the effect of low cost, easy integration, and small size

Active Publication Date: 2017-05-17
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The three technologies can effectively solve the bandwidth bottleneck problem in the future market, but each has its own problems that need to be solved urgently. For example, increasing the single-wavelength rate in the first method will inevitably lead to greater line dispersion
This method is not only difficult to master, but also highly dependent on equipment, which is not conducive to mass production and forms an industrial scale

Method used

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  • A tunable optical receiver and its tunable filter applied to twdm-pon system
  • A tunable optical receiver and its tunable filter applied to twdm-pon system
  • A tunable optical receiver and its tunable filter applied to twdm-pon system

Examples

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Effect test

Embodiment 1

[0044] Take the FSR as 800GHZ, piezoelectric ceramic drive dimmable receiver as an example, such as figure 1 As shown, the package box body 6 includes an incident collimator 1, a first filter etalon 2-1, a second filter etalon 2-2, a packaged APD chip 3, a first piezoelectric ceramic 4-1, a second filter etalon Two piezoelectric ceramics 4-2, a first fixed block 5-1, and a second fixed block 5-2, wherein the incident collimator 1 is aligned with the packaged APD chip 3 and realizes optical path coupling. The first filter etalon 2-1 and the second filter etalon 2-2 are air-based etalons, which are located between the incident collimator 1 and the packaged APD chip 3. They have the same thickness and FSR of 800GHZ. The reflectance of the front and rear surfaces of the etalon is the same, and the reflectance of the surfaces between the two etalons is the same, that is, the reflectances of the four surfaces of the two etalons are all the same, for example, they are all 0.8. One s...

Embodiment 2

[0048] Such as Figure 5 As shown, the package box 6 includes an incident collimator 1, a first filter etalon 2-1, a second filter etalon 2-2, a packaged APD chip 3, and a first fixed block 7 bonded. -1. Bonding the second fixing block 7-2, wherein the incident collimator 1 is aligned with the packaged APD chip 3 to realize optical path coupling. The first filtering etalon 2-1 and the second filtering etalon 2-2 are solid etalons, which are located between the radiation collimator 1 and the packaged APD chip 3. They have the same thickness, and their FSRs are both 800GHZ. The reflectance of the front and rear surfaces of the etalon is the same, and the reflectance of the surfaces between the two etalons is the same, that is, the reflectance of the four surfaces of the two etalons are all the same, for example, they are all 0.8. The material of the solid-state etalon can be a light-transmitting material with a high thermo-optic coefficient such as silicon. The first filter et...

Embodiment 3

[0050] Such as Figure 6 As shown, the first piezoelectric ceramic 4-1 and the second piezoelectric ceramic 4-2 in Embodiment 1 are respectively replaced with the first MEMS driving unit 8-1 and the second MEMS driving unit 8-2, and the rest are not Change. That is: one side of the first filter etalon 2-1 is connected to the first MEMS drive unit 8-1, and is fixed to the bottom surface of the packaging box 6 by bonding the first fixing block 5-1, and the second filter etalon 2-2 One side is connected with the second MEMS driving unit 8-2, and fixed on the bottom surface of the packaging box 6 by sticking the second fixing block 5-2. In this embodiment, the thickness adjustment of the first filter etalon 2-1 and the second filter etalon 2-2 are respectively driven by the first MEMS drive unit 8-1 and the second MEMS drive unit 8-2, and then adjusted. The transmission peak wavelength FSR realizes the tunable working wavelength of the whole tunable receiver.

[0051] Both the ...

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Abstract

The invention discloses an adjustable optical receiver applied to TWDM-PON system and an adjustable filter thereof; the adjustable optical receiver applied to TWDM-PON system comprises an incident collimating device, an F-P cavity filtering standard tool, a drive device and an APD chip packaged in the box body, the F-P cavity filtering standard tool is combined by two or more than two F-P cavity filtering standard tools having the same free space spectrum width; the optical signal enters into the F-P cavity filtering standard tool through the incident collimating device, the drive device adjusts the work wavelength of each F-P cavity filtering standard tool for reaching the agreement and adjusts the wavelength from the F-P cavity filtering standard tool to the TWDM-PON downlink signal for filtering, the APD chip is arranged at the receiving end of the F-P cavity filtering standard tool for converting the filtered optical signal into the electrical signal; for the application of the TWDM-PON, the industrialization is easily formed, the volume is small and the cost is lower.

Description

technical field [0001] The invention relates to an optical filter, in particular to an adjustable optical receiver and an adjustable filter applied to a TWDM-PON system. The invention belongs to the field of optical communication. Background technique [0002] The demand for bandwidth for information transmission has been growing at an explosive rate. In order to meet the rapid development of network traffic, in the backbone network, 40Gbps and 100Gbps optical networks have begun commercial deployment, and 400Gbps or 1Tbps optical communication systems have also begun research. At the access network level, higher requirements are inevitably placed on network traffic and multi-service support. At present, the access network is mainly based on the passive optical network PON technology with a tree structure, and the passive optical network TDM-PON (timedivision multiplexing-Passive optical network) based on time division multiplexing is widely used. EPON (Ethernet Passive Op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/60G02B6/42G02B26/00
Inventor 薛振峰孙莉萍肖清明白航李建万丹姜晋伟孙明超
Owner GUANGXUN SCI & TECH WUHAN
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