CN208939965U

CN208939965U - A kind of optical module test macro

Info

Publication number: CN208939965U
Application number: CN201821980612.1U
Authority: CN
Inventors: 杨程; 席文瑶
Original assignee: SICHUAN SUNSTAR COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: SICHUAN SUNSTAR COMMUNICATION TECHNOLOGY Co Ltd
Priority date: 2018-11-29
Filing date: 2018-11-29
Publication date: 2019-06-04
Anticipated expiration: 2028-11-29

Abstract

The utility model discloses a kind of optical module test macros, including oscillograph, power meter, spectrometer, optical attenuator, light source module and Error Detector, by the crucial test index of optical module: the test items such as optical power, extinction ratio, spectrum, channel cost, overload, sensitivity, reception/transmitting terminal monitoring are integrated into a test link to realize.Compared with prior art, the good effect of the utility model is: the utility model is in the case where guaranteeing module production test, it realizes: 1, incorporating the test step of optical module, reduce software management work, the risk for avoiding software management reduces testing cost while ensure that testing requirement；2, cleverly link design, enhances the service efficiency of instrument；3, the relevance between test index is established, test request has been equivalent to strictly, enhances the reliability of test result.

Description

A kind of optical module test macro

Technical field

The utility model relates to a kind of optical module test macros.

Background technique

In the production of optical module, in order to ensure the quality of module, the key index of module need to be tested.Key refers to Mark includes: optical power, extinction ratio, spectrum, channel cost, overload, sensitivity, reception/transmitting terminal monitoring etc..Existing test side Formula is: the test of channel cost, which needs individually to test link, to be just able to achieve, and other index tests in addition to the cost of channel Then needing to construct other test link can be able to achieve.Therefore, cause test step cumbersome in production, tester, equipment, field The waste of the resources such as ground, increases production cost, reduces testing efficiency.

Summary of the invention

The shortcomings that in order to overcome the prior art, the utility model provides a kind of optical module test macro, by optical module Crucial test index: the test items such as optical power, extinction ratio, spectrum, channel cost, overload, sensitivity, reception/transmitting terminal monitoring Mesh is integrated into a test link to realize.

The technical scheme adopted by the utility model is a kind of optical module test macro, including oscillograph, power meter, light Spectrometer, optical attenuator, light source module and Error Detector, in which: the transmitting terminal Tx signal of module to be measured is connected to first by optical fiber The port X1 of photoswitch, receiving end Rx signal are connected to the port X1 of the second photoswitch by optical fiber；The transmitting of light source module End Tx_ref signal is connected to the port X2 of the first photoswitch by optical fiber, and receiving end Rx_ref signal is connected to by optical fiber The port X2 of second photoswitch；The port Y1 of first photoswitch is connected with the port X2 of third photoswitch by optical fiber, the first light The port Y2 of switch is via the input port for being separately connected oscillograph, power meter and spectrometer after optical splitter and the second light The port Y1 of switch；10Km optical fiber bucket, the port Y2 of third photoswitch and light decay are connected between the end X1 and Y1 of third photoswitch Subtract the connection of the end device In；The port Y2 of second photoswitch is connect with the end optical attenuator Out.

Compared with prior art, the good effect of the utility model is:

The utility model is realized in the case where guaranteeing module production test:

1, the test step of optical module is incorporated, software management work is reduced, avoids the risk of software management, is tested It is at low cost while ensure that testing requirement；

2, cleverly link design, enhances the service efficiency of instrument；

3, the relevance for establishing index, has been equivalent to strictly test request, enhances the reliability of test result.

Detailed description of the invention

The utility model will illustrate by example and with reference to the appended drawing, in which:

Fig. 1 is that the test link of the utility model constitutes schematic diagram；

Fig. 2 is load/cancellation schematic diagram of 10Km optical fiber in the test of channel cost；

Fig. 3 is reception/test of transmitting terminal measurement sensitivity, channel cost test schematic diagram；

Fig. 4 is module winding connected mode schematic diagram to be measured；

Fig. 5 is control photoswitch 1, and photoswitch 2 is in crossing condition, and photoswitch 3 is in pass-through state test schematic diagram；

Fig. 6 is control photoswitch 1, and photoswitch 2 is in pass-through state, and photoswitch 3 is in crossing condition test schematic diagram.

Specific embodiment

A kind of optical module test macro, as shown in Figure 1, the equipment list for including is as shown in the table:

Serial number	Title	Serial number	Title
				1	Coaxial line	8	Power meter
2	Module to be measured	9	Spectrometer
				3	Photoswitch 1	10	Optical attenuator
4	10Km optical fiber bucket	11	Photoswitch 2
				5	Photoswitch 3	12	Light source module
6	1/4 optical splitter	13	Error Detector
				7	Oscillograph	14	/

Module DUT electrical port Tx+ to be measured/-, Rx+/- is connected using coaxial line realization winding, so that Error Detector generated Modulated signal switchs to optical signal by electric signal through light source module, then reaches module receiving end to be measured by link and switch to electricity by optical signal Signal is loaded onto module transmitting terminal.Connection description: the transmitting terminal Tx signal of module DUT to be measured is connected to photoswitch 1 by optical fiber The port X1, receiving end Rx signal is connected to the port X1 of photoswitch 2 by optical fiber；The transmitting terminal Tx_ of light source module REF Ref signal is connected to the port X2 of photoswitch 1 by optical fiber, and receiving end Rx_ref signal is connected to photoswitch 2 by optical fiber The port X2；The port Y1 of photoswitch 1 is connected with the port X2 of photoswitch 3 by optical fiber, and the port Y2 of photoswitch 1 is via one The end Y1 of oscillograph, power meter, the input port of spectrometer and photoswitch 2 has been separately connected after a 1 point 4 of optical splitter Mouthful；Channel cost test 10Km optical fiber used, the port Y2 of photoswitch 3 and light are connected between the end X1 and Y1 of photoswitch 3 The connection of the end attenuator In；The port Y2 of photoswitch 2 is connect with the end optical attenuator Out.

By controlling photoswitch 1, photoswitch 2, photoswitch 3 changes the connection of optical path, realizes that different optical path signals is walked To realize that the test of module key index is completed in the same station.

(1) load/cancellation of 10Km optical fiber is completed using 2*2 photoswitch 3 in the test of channel cost, as shown in Fig. 2, in figure (a) 10Km optical fiber is loaded for Tx optical path；(b) 10Km optical fiber is not loaded with for Tx optical path；

(2) reception/transmitting terminal test reduces testing cost using the same optical attenuator is shared, as shown in figure 3, figure In (a) be Rx sensitivity test when link connection；(b) link connection when being tested for the channel Tx cost；

(3) module winding connection type to be measured is as shown in Figure 4；

When being tested using this test macro:

Step 1: control photoswitch 1, photoswitch 2 are in crossing condition, and photoswitch 3 is in pass-through state, as shown in figure 5, , can be by readout power meter under this link state, oscillograph, spectrometer tests the optical power of its transmitting terminal, extinction ratio, The parameters such as spectrum control attenuator, the test of receiving end sensitivity, overload can be realized by Error Detector；

Step 2: control photoswitch 1, photoswitch 2 are in pass-through state, and photoswitch 3 is in crossing condition, as shown in fig. 6, Under this link state, adjust control attenuator, by Error Detector can measure transmitting terminal optical path band 10Km optical fiber with without The Sensitirity va1ue of optical fiber, therefore, it is determined that its channel cost characteristic.

Background technique and the utility model difference:

(1) background technique, which tests module key, needs two test links, twice test steps；And the utility model is only Test link, one of test step is needed to can be completed, saved cost reduces process again；

(2) background technique module to be measured, which uses, is loaded directly into transmitting terminal modulated signal, and the utility model is connected using winding Mode is connect, reception/transmitting terminal index relevance is established, reduces the complexity of test link.

(3) background technique needs dedicated channel cost test software, and this technology only needs a test software, improves The functionality of software saves exploitation, management work.

Claims

1. a kind of optical module test macro, it is characterised in that: including oscillograph, power meter, spectrometer, optical attenuator, light source die Block and Error Detector, in which: the transmitting terminal Tx signal of module to be measured is connected to the port X1 of the first photoswitch by optical fiber, receives End Rx signal is connected to the port X1 of the second photoswitch by optical fiber；The transmitting terminal Tx_ref signal of light source module is connected by optical fiber It is connected to the port X2 of the second photoswitch, receiving end Rx_ref signal is connected to the port X2 of the second photoswitch by optical fiber；The The port Y1 of one photoswitch is connected with the port X2 of third photoswitch by optical fiber, and the port Y2 of the first photoswitch is via optical branching The input port of oscillograph, power meter and spectrometer and the port Y1 of the second photoswitch are separately connected after device；Third photoswitch The end X1 and Y1 between connect 10Km optical fiber bucket, the port Y2 of third photoswitch is connect with the end optical attenuator In；Second photoswitch The port Y2 connect with the end optical attenuator Out.

2. a kind of optical module test macro according to claim 1, it is characterised in that: the electrical port of the module to be measured Realize that winding connects using coaxial line, so that modulated signal caused by Error Detector switchs to light letter by electric signal through light source module Number, then module receiving end to be measured is reached by link, electric signal is switched to by optical signal, it is loaded onto module transmitting terminal to be measured.

3. a kind of optical module test macro according to claim 1, it is characterised in that: the port X1 of first photoswitch It is connect with the port Y2, the port X2 is connect with the port Y1；The port X1 of second photoswitch connect with the port Y2, the port X2 and Y1 Port connection；The port X1 of the third photoswitch is connect with the port Y1, the port X2 is connect with the port Y2.

4. a kind of optical module test macro according to claim 1, it is characterised in that: the port X1 of first photoswitch It is connect with the port Y1, the port X2 is connect with the port Y2；The port X1 of second photoswitch connect with the port Y1, the port X2 and Y2 Port connection.

5. a kind of optical module test macro according to claim 4, it is characterised in that: the port X1 of the third photoswitch It is connect with the port Y1, the port X2 is connect with the port Y2.

6. a kind of optical module test macro according to claim 4, it is characterised in that: the port X1 of the third photoswitch It is connect with the port Y2, the port X2 is connect with the port Y1.