An optical transceiver assembly test system

Abstract

An optical transceiver module test system comprises an optical receiving module, an optical cable array connected with the output end of the optical receiving module, the optical cable array comprising a plurality of series single-pole double-throw optical switches and a single-pole multi-throw optical switch, two adjacent single-pole double-throw optical switches being connected by an optical cable, the input end of the first single-pole double-throw optical switch being connected with the output end of the optical receiving module, one of the output ends of the last single-pole double-throw optical switch being connected with one of the input ends of the single-pole multi-throw optical switch, and the other output end of each single-pole double-throw optical switch not connected with the optical cable being connected with one of the input ends of the single-pole multi-throw optical switch. The optical transceiver module test system can adjust different test distances according to different transceiver module performances, and is particularly suitable for conveniently testing the detection characteristics of terahertz module products at different distances.

Description

Technical Field

[0001] This utility model belongs to the field of optical technology, specifically relating to an optical transceiver component testing system. Background Technology

[0002] Optical transceiver components are generally used for target detection using optical methods. For terahertz band target detection, the distance is generally relatively short. When testing, it is necessary to debug and test the detection characteristics of terahertz component products at different distances. Existing optical transceiver component testing can perform performance testing for specific distances, but it is inconvenient to change the test for multiple distances. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model discloses an optical transceiver component testing system.

[0004] The optical transceiver component testing system of this utility model is characterized in that it includes an optical receiving module and an optical cable array connected to the output end of the optical receiving module. The optical cable array includes multiple single-pole double-throw optical switches connected in series and one single-pole multi-throw optical switch. Adjacent single-pole double-throw optical switches are connected by optical cables. The input end of the first single-pole double-throw optical switch is connected to the output end of the optical receiving module. One output end of the last single-pole double-throw optical switch is connected to one input end of the single-pole multi-throw optical switch. The other output end of each of the remaining single-pole double-throw optical switches that is not connected to an optical cable is connected to one input end of the single-pole multi-throw optical switch. The output of the single-pole multi-throw optical switch is connected to an optical coupler. The two outputs of the optical coupler are respectively connected to an optical attenuation controller and a photoelectric conversion module. The output of the optical attenuation controller is connected to the input of a two-way beam splitter. The two outputs of the two-way beam splitter are respectively connected to an optical amplifier and an optical detector. The optical transceiver component test system also includes a signal acquisition, control, and power supply module, which provides power, signal acquisition, and signal control for each module.

[0005] Preferably, the optical coupler is a beam splitter.

[0006] Preferably, the output terminal of the single-pole multi-throw optical switch is connected to the input terminal of the single-pole double-throw optical switch, and the two output terminals of the single-pole double-throw optical switch are respectively connected to the optical coupler and the optical power meter.

[0007] The optical transceiver component testing system described in this utility model can adjust different testing distances for different transceiver component performances, and is particularly suitable for conveniently testing the detection characteristics of terahertz component products at different distances. Attached Figure Description

[0008] Figure 1This is a schematic diagram of a specific embodiment of the optical transceiver component testing system of this utility model; The labels in the diagram are: K - single-pole double-throw optical switch, SK - single-pole multi-throw optical switch, and L - optical fiber. Detailed Implementation

[0009] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0010] like Figure 1 As shown, the optical transceiver component testing system of this utility model includes an optical receiving module and an optical cable array connected to the output end of the optical receiving module. The optical cable array includes multiple single-pole double-throw optical switches connected in series and one single-pole multi-throw optical switch. Adjacent single-pole double-throw optical switches are connected by optical cables. The input end of the first single-pole double-throw optical switch is connected to the output end of the optical receiving module. One output end of the last single-pole double-throw optical switch is connected to one input end of the single-pole multi-throw optical switch. The other output end of each of the remaining single-pole double-throw optical switches that is not connected to an optical cable is connected to one input end of the single-pole multi-throw optical switch. The output of the single-pole multi-throw optical switch is connected to an optical coupler. The two outputs of the optical coupler are respectively connected to an optical attenuation controller and a photoelectric conversion module. The output of the optical attenuation controller is connected to the input of a two-way beam splitter. The two outputs of the two-way beam splitter are respectively connected to an optical amplifier and an optical detector. The optical transceiver component test system also includes a signal acquisition, control, and power supply module, which provides power, signal acquisition, and signal control for each module.

[0011] This invention is used to measure the light signals emitted and returned by an optical transceiver component under test when it illuminates a typical target, thereby detecting the optical transceiver performance of the optical transceiver component when it illuminates the target through optical paths of different lengths.

[0012] In use, the output of the optical transceiver component under test is optically connected to the input of the optical receiver module. The lengths of the optical cables in the optical cable array can be different. By switching the switching states of single-pole double-throw optical switches and single-pole multi-throw optical switches, the lengths of the optical fibers connected in the optical cable array can be varied. For example... Figure 1In the specific implementation shown, the first single-pole double-throw optical switch closes upwards, the second single-pole double-throw optical switch closes downwards, and the single-pole multi-throw optical switch closes towards the second input terminal, so that only one segment of optical cable connected between the first and second single-pole double-throw optical switches is connected to the optical path. Alternatively, the first and second single-pole double-throw optical switches close upwards, the third single-pole double-throw optical switch closes downwards, and the single-pole multi-throw optical switch closes towards the third input terminal, so that both segments of optical cable connected between the first, second, and third single-pole double-throw optical switches are connected to the optical path; thereby achieving switching between different optical cable lengths.

[0013] The target can be installed anywhere along the optical path, for example... Figure 1 In the diagram, the target is installed at point X, between the optical coupler and the optical attenuation controller. The optical receiving module can be a lens group, optical fiber, etc. The two-way beam splitter typically splits the input light equally, with half the intensity of the optical signal being transmitted to the optical detector. The optical coupler is generally a beam splitter. An optical coupler splits one optical signal into a photoelectric conversion module, which converts it into an electrical signal for acquiring characteristic optical signals such as wavelength and frequency. The other optical signal is dynamically adjusted by an optical attenuation controller and then split into two by a beam splitter. One optical signal is sent to an optical detector to generate a synchronization signal. The synchronization signal output by the optical detector is sent to the signal acquisition control and power supply module for signal generation control. The other optical signal is returned to the receiving branch in the optical transceiver under test after passing through an optical amplifier. The optical attenuation controller is used to simulate the loss of light on the transmission path. The optical amplifier compensates for the loss that may be caused by the light passing through the optical transceiver test system and returns the compensated light to the optical transceiver under test for performance evaluation.

[0014] Both optical couplers and two-way beam splitters can use existing beam splitter equipment. The difference between the two is that the splitting ratio of an optical coupler is much larger. Usually, only a small portion of the light intensity needs to be split to the photoelectric conversion module for photoelectric performance conversion, while most of the remaining light enters the optical attenuation controller. In contrast, the splitting ratio of a two-way beam splitter is generally 1:1.

[0015] After the optical signal is processed by the receiving branch, it is processed by the signal acquisition control and power supply module. The control of each module and the acquisition and analysis of the signal are existing technologies in this field and will not be described in detail here.

[0016] Figure 1In the specific embodiment shown, an optical power meter can be connected to the output end of the single-pole multi-throw optical switch. Specifically, the output end of the single-pole multi-throw optical switch is connected to the input end of a single-pole double-throw optical switch, and the two output ends of the single-pole double-throw optical switch are respectively connected to the optical coupler and the optical power meter. By switching the optical path, the optical power meter can be used to measure the optical power before it is split and attenuated on the optical path, and the detection result is transmitted to the signal acquisition, control and power supply module for processing.

[0017] The optical transceiver component test system described in this invention utilizes a power amplifier to compensate for the inherent insertion loss of the transmission path, thereby increasing the equivalent range for target RCS simulation. A switch enables rapid switching of waveguide length to simulate multiple typical target distances.

[0018] The foregoing descriptions are preferred embodiments of this utility model. Unless there is a clear contradiction between the preferred embodiments or a prerequisite for a particular preferred embodiment, the preferred embodiments can be arbitrarily combined and used. The embodiments and specific parameters described are only for clearly illustrating the utility model verification process of the inventor and are not intended to limit the patent protection scope of this utility model. The patent protection scope of this utility model is still subject to its claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model should also be included within the protection scope of this utility model.

Claims

1. An optical transceiver component testing system, characterized in that, The device includes an optical receiving module and an optical cable array connected to the output of the optical receiving module. The optical cable array includes multiple single-pole double-throw optical switches connected in series and one single-pole multi-throw optical switch. Adjacent single-pole double-throw optical switches are connected by optical cables. The input of the first single-pole double-throw optical switch is connected to the output of the optical receiving module. One output of the last single-pole double-throw optical switch is connected to one input of the single-pole multi-throw optical switch. The other output of each of the remaining single-pole double-throw optical switches that is not connected to an optical cable is connected to one input of the single-pole multi-throw optical switch. The output of the single-pole multi-throw optical switch is connected to an optical coupler. The two outputs of the optical coupler are respectively connected to an optical attenuation controller and a photoelectric conversion module. The output of the optical attenuation controller is connected to the input of a two-way beam splitter. The two outputs of the two-way beam splitter are respectively connected to an optical amplifier and an optical detector. The optical transceiver component test system also includes a signal acquisition, control, and power supply module, which provides power, signal acquisition, and signal control for each module.

2. The optical transceiver component testing system as described in claim 1, characterized in that, The optical coupler is a beam splitter.

3. The optical transceiver component testing system as described in claim 1, characterized in that, The output terminal of the single-pole multi-throw optical switch is connected to the input terminal of the single-pole double-throw optical switch, and the two output terminals of the single-pole double-throw optical switch are respectively connected to the optical coupler and the optical power meter.

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