A device arrangement method for improving performance of a WDM module

Abstract

The application provides a device sequence arrangement method for improving the performance of a WDM module. The arrangement sequence of devices is determined by comparing the insertion loss values of the devices. The devices corresponding to the maximum theoretical insertion loss value and the maximum channel insertion loss value are arranged in the front, so as to reduce the further attenuation of signals in subsequent devices, maintain the integrity and strength of the signals, and ensure that the signals can be accurately and efficiently transmitted to subsequent circuits. The device corresponding to the maximum theoretical insertion loss value reduces the signal strength, avoids the oscillation and interference of signals on the WDM module, and improves the stability of the WDM module. Meanwhile, the device corresponding to the maximum theoretical insertion loss value can also attenuate noise and interference, maintain the purity of the signals, and improve the communication quality. The arrangement sequence of each device is determined by comparing the insertion loss values of each device, so as to quickly position the position of the device, improve the performance of the WDM module, and speed up the efficiency.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method for arranging devices in a specific order to improve the performance of a WDM module. Background Technology

[0002] Insertion loss, also known as insertion loss, refers to the signal loss between the transmitter and receiver, usually referring to attenuation. There is a close relationship between the arrangement of channel components and the insertion loss value. Insertion loss, in its full form, refers to the signal loss caused by inserting a cable or component between the transmitter and receiver; it is usually referred to as attenuation. Different component arrangements affect signal transmission and loss. The arrangement of channel components has a significant impact on the insertion loss value; when arranging components, the order of the components needs to be considered to reduce insertion loss and improve the overall system performance.

[0003] Currently, the arrangement of devices follows the ITU standard channels. After the devices are fused, the maximum and minimum insertion loss values ​​are determined through testing. Then, the transmission end of the channel with the minimum insertion loss value is attenuated by using the difference between the maximum and minimum insertion loss values. This testing method is cumbersome. Taking a DWDM module as an example, a DWDM module has 16 channels, with approximately 21 trillion possible device arrangements, of which only one arrangement can achieve the optimal insertion loss value. Testing the maximum and minimum insertion loss values ​​takes a long time and results in low production efficiency. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a device sequence arrangement method to improve the performance of a WDM module. This method compares the insertion loss values ​​of each device to determine its arrangement order, enabling rapid device positioning and thus improving both WDM module performance and efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution used in this invention is as follows:

[0006] The present invention discloses a device sequence arrangement method for improving the performance of a WDM module, comprising the following steps:

[0007] S1. Preset the insertion loss values ​​for each device in different channels.

[0008] S2. Set the channel containing the device with the maximum theoretical insertion loss value as the a-th channel, with an initial value of 1 for a; set the channel containing the device with the minimum insertion loss value at the end of the channel other than the device with the maximum theoretical insertion loss value as the n-th channel.

[0009] S3, setting the channel where the device with the maximum channel insertion loss value among the remaining unsorted devices is located as the a+1th channel; and setting the channel where the device with the minimum end channel insertion loss value among the remaining unsorted devices is located as the n-1th channel.

[0010] S4, sorting the remaining unsorted devices.

[0011] Preferably, S2 comprises the following steps:

[0012] S2.1, determining whether the device with the maximum theoretical insertion loss value and the device with the minimum end channel insertion loss value are the same device; if not, proceeding to S2.2; if yes, proceeding to S2.3.

[0013] S2.2, setting the channel where the device with the maximum theoretical insertion loss value is located as the first channel; and setting the channel where the device with the minimum end channel insertion loss value is located as the n th channel.

[0014] S2.3, setting the channel where the device with the maximum theoretical insertion loss value is located as the first channel; and setting the channel where the device with the other end channel insertion loss value closest to the minimum end channel insertion loss value is located as the n th channel.

[0015] Preferably, S3 comprises the following steps:

[0016] S3.1, determining whether the device with the maximum channel insertion loss value among the remaining unsorted devices and the device with the minimum end channel insertion loss value are the same device; if not, proceeding to S3.2; if yes, proceeding to S3.3.

[0017] S3.2, setting the channel where the device with the maximum channel insertion loss value among the remaining unsorted devices is located as the 1+a th channel, and the initial value of a is 1; and setting the channel where the device with the minimum end channel insertion loss value among the remaining unsorted devices is located as the n-1th channel.

[0018] S3.3, setting the channel where the device with the maximum channel insertion loss value among the remaining unsorted devices is located as the 1+a th channel, and the initial value of a is 1; and setting the channel where the device with the other end channel insertion loss value closest to the minimum end channel insertion loss value among the remaining unsorted devices is located as the n-1th channel.

[0019] Preferably, the insertion loss value data comprises the insertion loss values of each device at different channels.

[0020] Preferably, the end channel insertion loss value is the insertion loss value of the device at the reflection end of the end channel; and the maximum end channel insertion loss value is the end channel insertion loss value with the maximum value.

[0021] Preferably, the theoretical insertion loss value is the sum of the insertion loss value after the coupling is fused, the insertion loss value after the C-band bandpass device is fused, and the insertion loss value after each device is fused; and the maximum theoretical insertion loss value is the maximum theoretical insertion loss value.

[0022] Preferably, the maximum channel insertion loss value is the sum of the insertion loss value after the coupling is fused, the insertion loss value after the C-band bandpass device is fused, the insertion loss value after the device in front is fused, and the insertion loss value after the current device is fused.

[0023] Preferably, the insertion loss value after the coupling is fused is the product of the insertion loss value of the coupling and the coupling fusion factor; the insertion loss value after the C-band bandpass device is fused is the product of the insertion loss value of the C-band bandpass device and the C-band bandpass device fusion factor; and the insertion loss value after the device is fused is the product of the insertion loss value of the device and the device fusion factor.

[0024] The beneficial effects of the device sequence arrangement method for improving the performance of a WDM module according to the present application mainly include: by obtaining the insertion loss values of different devices, the device corresponding to the maximum theoretical insertion loss value and the device corresponding to the maximum channel insertion loss value are arranged in front, further attenuation of the signal in the subsequent devices is reduced, the integrity and strength of the signal are maintained, and the signal can be accurately and efficiently transmitted to the subsequent circuit. The signal strength is reduced by the device corresponding to the maximum theoretical insertion loss value, the oscillation and interference of the signal on the WDM module are avoided, and the stability of the WDM module is improved; at the same time, the device corresponding to the maximum theoretical insertion loss value can also produce an attenuation effect on noise and interference, maintain the purity of the signal, and improve the communication quality. By comparing the insertion loss values of each device, the arrangement order of each device is determined, the position of the device is quickly located, the maximum insertion loss value of the WDM module is effectively reduced, and at the same time, the difference in insertion loss value between the maximum insertion loss value and the minimum insertion loss value is reduced, the performance of the WDM module is improved, and the efficiency is also improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which preferred embodiments of the present application are shown. Like reference numerals refer to like elements throughout. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the present application.

[0026] Figure 1 The flowchart of the present application. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be described in further detail below with reference to the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it. However, the embodiments are not intended to limit the present application. In the embodiments, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0028] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated as a whole, or there can be a middle element. The terms "mount", "one end", "the other end" and the like used in the present application are only for the purpose of illustration.

[0029] The embodiment provides a device sequential arrangement method for improving the performance of a WDM module, comprising the following steps:

[0030] S1, presetting the insertion loss value data of each device. In the embodiment, the insertion loss value data of the device is preset according to the model of the device.

[0031] S2, setting the channel where the device corresponding to the maximum theoretical insertion loss value is located as the a-th section channel, and the initial value of a is 1; and setting the channel where the device corresponding to the minimum end channel insertion loss value other than the device corresponding to the maximum theoretical insertion loss value is located as the n-th section channel.

[0032] S3, setting the channel where the device corresponding to the maximum channel insertion loss value in the remaining unsorted devices is located as the a+1-th section channel; and setting the channel where the device corresponding to the minimum end channel insertion loss value other than the device corresponding to the maximum channel insertion loss value in the remaining unsorted devices is located as the n-1-th section channel.

[0033] S4, sorting the remaining devices.

[0034] In a preferred embodiment, the end channel insertion loss value is the insertion loss value of the device at the reflection end of the end channel.

[0035] In the embodiment, the coupler is a coupler (Fiber Bragg Tunable, FBT). In another embodiment, the C-band bandpass device can be replaced by other different optical communication bandpass devices, which can be set according to different transmission requirements.

[0036] In the embodiment, the theoretical insertion loss value is the sum of the insertion loss value after the coupling (FBT) is fused, the insertion loss value after the C-band bandpass device (Filter-A) is fused, and the insertion loss value after each device is fused; the maximum theoretical insertion loss value is the maximum theoretical insertion loss value; and the maximum channel insertion loss value is the sum of the insertion loss value after the coupling (FBT) is fused, the insertion loss value after the C-band bandpass device (Filter-A) is fused, the insertion loss value after the device in front is fused, and the insertion loss value after the current device is fused.

[0037] The insertion loss value after the coupling (FBT) is fused is the product of the insertion loss value of the coupling (FBT) and the coupling (FBT) fusion factor; the insertion loss value after the C-band bandpass device (Filter-A) is fused is the product of the insertion loss value of the C-band bandpass device (Filter-A) and the C-band bandpass device (Filter-A) fusion factor; and the insertion loss value after the device is fused is the product of the insertion loss value of the device and the device fusion factor. The coupling (FBT) fusion factor, the C-band bandpass device (Filter-A) fusion factor, and the device fusion factor are all preset values.

[0038] The above method arranges the device corresponding to the maximum theoretical insertion loss value and the device corresponding to the maximum channel insertion loss value in front by obtaining the insertion loss values of different devices, reduces the further attenuation of the signal in subsequent devices, maintains the integrity and strength of the signal, and ensures that the signal can be accurately and efficiently transmitted to subsequent circuits. The device corresponding to the maximum theoretical insertion loss value reduces the signal strength, avoids the oscillation and interference of the signal on the WDM module, and improves the stability of the WDM module; at the same time, the device corresponding to the maximum theoretical insertion loss value also has an attenuation effect on noise and interference, maintains the purity of the signal, and improves the communication quality. By comparing the insertion loss values of each device, the arrangement order of each device is determined, the position of the device is quickly located, the maximum insertion loss value of the WDM module is effectively reduced, the difference between the maximum insertion loss value and the minimum insertion loss value is reduced, and the performance of the WDM module is improved while the efficiency is accelerated.

[0039] In the above method

[0040] S2 includes the following steps:

[0041] S2.1, determining whether the device corresponding to the maximum theoretical insertion loss value and the device corresponding to the minimum end channel insertion loss value are the same device; if not, performing S2.2; if yes, performing S2.3.

[0042] S2.2, setting the channel where the device corresponding to the maximum theoretical insertion loss value is located as the first section channel; and setting the channel where the device corresponding to the minimum end channel insertion loss value is located as the n section channel.

[0043] S2.3, setting the channel where the device corresponding to the maximum theoretical insertion loss value is located as the first section channel; and setting the channel where the device corresponding to the insertion loss value of the other end channel closest to the minimum end channel insertion loss value as the nth section channel.

[0044] S3 includes the following steps:

[0045] S3.1, judging whether the device corresponding to the maximum channel insertion loss value and the device corresponding to the minimum end channel insertion loss value in the remaining unsorted devices are the same device; if not, S3.2 is performed; if yes, S3.3 is performed.

[0046] S3.2, setting the channel where the device corresponding to the maximum channel insertion loss value in the remaining unsorted devices is located as the 1+a section channel, and the initial value of a is 1; and setting the channel where the device corresponding to the minimum end channel insertion loss value in the remaining unsorted devices is located as the n-1 section channel.

[0047] S3.3, setting the channel where the device corresponding to the maximum channel insertion loss value in the remaining unsorted devices is located as the 1+a section channel, and the initial value of a is 1; and setting the channel where the device corresponding to the insertion loss value of the other end channel closest to the minimum end channel insertion loss value in the remaining unsorted devices is located as the n section channel.

[0048] The following is illustrated by data:

[0049] Table 1.1 is the insertion loss value data of unsorted devices C20-C27

[0050]

[0051] Table 1.1 Table 1.2 is the insertion loss value data of unsorted devices C28-C32

[0052]

[0053] Table 1.2

[0054] In this embodiment, n is 16, and the devices include C20, C21, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C32, and C33.

[0055] As shown in Table 1.1 and Table 1.2, the product of the coupler (FBT) insertion loss value and the coupler (FBT) fusion factor is FBT 0.17; and the product of the C-band bandpass device (Filter-A) insertion loss value and the C-band bandpass device (Filter-A) fusion factor is FA 0.12.

[0056] The product of the device insertion loss value and the device fusion factor of C20 is 0.405; the product of the device insertion loss value and the device fusion factor of C21 is 0.45; the product of the device insertion loss value and the device fusion factor of C22 is 0.342; the product of the device insertion loss value and the device fusion factor of C23 is 0.261; the product of the device insertion loss value and the device fusion factor of C24 is 0.378; the product of the device insertion loss value and the device fusion factor of C25 is 0.369; the product of the device insertion loss value and the device fusion factor of C26 is 0.369; the product of the device insertion loss value and the device fusion factor of C27 is 0.342; the product of the device insertion loss value and the device fusion factor of C28 is 0.396; the product of the device insertion loss value and the device fusion factor of C29 is 0.324; the product of the device insertion loss value and the device fusion factor of C30 is 0.477; the product of the device insertion loss value and the device fusion factor of C31 is 0.234; the product of the device insertion loss value and the device fusion factor of C32 is 0.369; the product of the device insertion loss value and the device fusion factor of C33 is 0.423; the product of the device insertion loss value and the device fusion factor of C34 is 0.378; the product of the device insertion loss value and the device fusion factor of C35 is 0.369.

[0057] The theoretical insertion loss value of each device is calculated by summing the product of the insertion loss value and the device fusion factor of each device, the product of the insertion loss value and the coupling factor (FBT) of the coupler (FBT), and the product of the insertion loss value and the C-band bandpass device (Filter-A) of the C-band bandpass device (Filter-A). Specifically, the theoretical insertion loss value of device C20 is 0.698; the theoretical insertion loss value of device C21 is 0.743; the theoretical insertion loss value of device C22 is 0.635; the theoretical insertion loss value of device C23 is 0.554; the theoretical insertion loss value of device C24 is 0.671; the theoretical insertion loss value of device C25 is 0.653; the theoretical insertion loss value of device C26 is 0.662; the theoretical insertion loss value of device C27 is 0.635; the theoretical insertion loss value of device C28 is 0.689; the theoretical insertion loss value of device C29 is 0.617; the theoretical insertion loss value of device C30 is 0.77; the theoretical insertion loss value of device C31 is 0.527; the theoretical insertion loss value of device C32 is 0.662; the theoretical insertion loss value of device C33 is 0.716; the theoretical insertion loss value of device C34 is 0.671; and the theoretical insertion loss value of device C25 is 0.662. In this way, the maximum theoretical insertion loss value is determined to be the theoretical insertion loss value of device C30, which is 0.77

[0058] Table 1.3 is the corresponding theoretical insertion loss value and end channel insertion loss value of devices C28-C35

[0059]

[0060]

[0061] Table 1.3

[0062] Referring to Table 1.3, by obtaining the preset end channel insertion loss value, the end channel insertion loss value of each device can be obtained. Further, it can be determined that the maximum theoretical insertion loss value corresponds to device C30; the minimum end channel insertion loss value corresponds to device C23; device C30 and device C23 are different devices; therefore, in S2, the channel where device C30 is located is set as the first section channel; and the channel where device C23 is located is set as the nth section channel.

[0063] Table 2.1 and Table 2.2 are insertion loss value data corresponding to unsorted devices other than C23 and C30

[0064]

[0065] Table 2.1

[0066]

[0067] Table 2.2 Table 2.3 is the theoretical insertion loss value and end channel insertion loss value corresponding to devices other than C23 and C30

[0068] STEP-2 MAX MIN CH P-#2 P-#15 C30 C20 0.831 2.707 C21 0.876 2.710 C22 0.768 2.581 C24 0.804 2.610 C25 0.786 2.599 C26 0.795 2.580 C27 0.768 2.623 C28 0.822 2.628 C29 0.750 2.591 C31 0.660 2.508 C32 0.795 2.615 C33 0.849 2.690 C34 0.804 2.596 C35 0.795 2.636 C23 VALUE 0.876 2.508

[0069] Table 2.3

[0070] After setting the devices in the first section channel and the nth section channel, the remaining devices are sorted, and the remaining unsorted devices are set in the second section channel and the n-1 section channel; referring to Tables 2.1-2.3, the fusion insertion loss value corresponding to C21 is the largest; in the calculation of the current maximum channel insertion loss value, the maximum channel insertion loss value corresponding device is C21, which is calculated by the fusion insertion loss value of the coupler (FBT), the fusion insertion loss value of the C-band bandpass device (Filter-A), the fusion insertion loss value of the previously sorted device C30, and the fusion insertion loss value of the current device C21; further, the channel where device C21 is located is set as the second section channel; at the same time, by obtaining the end channel insertion loss value of the unsorted device, it is determined that the current minimum end channel insertion loss value corresponds to device C31; further, the channel where device C31 is located is set as the n-1 section channel.

[0071] Table 3.1 is the theoretical insertion loss value and end channel insertion loss value corresponding to devices other than C23, C30, C20, and C31

[0072]

[0073]

[0074] Table 3.1

[0075] After setting the devices for channels 1, 2, (n-1), and n, the remaining devices are sorted. The remaining unsorted devices are then placed in channels 3 and (n-2). Referring to Tables 2.1-2.3 and 3.1, C33 has the largest insertion loss after fusion splicing. When calculating the current maximum channel insertion loss, the device corresponding to the maximum channel insertion loss is determined to be C33 using the insertion loss values ​​of the coupler (FBT), the C-band bandpass device (Filter-A), the previously sorted device C30, the previously sorted device C21, and the current device C33. The channel containing device C33 is then set as channel 3. Simultaneously, by obtaining the insertion loss value of the unsorted device's end channel, the device corresponding to the current minimum end channel insertion loss value is determined to be C26. The channel containing device C26 is then set as channel (n-2).

[0076] Then, continue repeating step S3, sequentially setting the channel containing device C20 as channel 4; the channel containing device C28 as channel 5; the channel containing device C24 as channel 6; the channel containing device C32 as channel 7; and the channel containing device C35 as channel 8. Simultaneously, adjust the insertion loss value of the data end channel. Then, sequentially set the channel containing device C26 as channel n-2; the channel containing device C22 as channel n-3; the channel containing device C29 as channel n-4; the channel containing device C34 as channel n-5; the channel containing device C25 as channel n-6; and the channel containing device C27 as channel n-7.

[0077] In this embodiment, the devices are ordered as follows: device C30, device C21, device C33, device C20, device C28, device C24, device C32, device C35, device C27, device C25, device C34, device C29, device C22, device C26, device C31, and device C23.

[0078] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0079] In the description of this specification, the references to terms such as "preferred embodiment," "another embodiment," "other embodiment," or "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A method for arranging devices in a specific order to improve the performance of a WDM module, characterized in that: Includes the following steps: S1. Preset the insertion loss value data for each device; S2. Set the channel containing the device with the maximum theoretical insertion loss value as channel a, with an initial value of 1; set the channel containing the device with the minimum insertion loss value at the end channel other than the device with the maximum theoretical insertion loss value as channel n; n is 16. S3. Sort the remaining unsorted devices; set the channel of the device with the largest channel insertion loss value in the remaining unsorted devices as the a+1th channel, and set the channel of the device with the smallest end channel insertion loss value (excluding the device with the largest channel insertion loss value in the remaining unsorted devices) as the n-1th channel. S4. Repeat S3 to sort the remaining unsorted devices until all devices are sorted.

2. The device sequence arrangement method for improving WDM module performance according to claim 1, characterized in that: S2 includes the following steps: S2.1 Determine whether the device corresponding to the maximum theoretical insertion loss value and the device corresponding to the minimum end channel insertion loss value are the same device; if not, proceed to S2.2; if yes, proceed to S2.

3. S2.2 Set the channel containing the device with the maximum theoretical insertion loss value as the first channel; set the channel containing the device with the minimum insertion loss value at the end channel as the nth channel. S2.

3. Set the channel containing the device with the maximum theoretical insertion loss value as the first channel; set the channel containing the device with the insertion loss value of the other end channel that is closest to the minimum insertion loss value as the nth channel.

3. The device sequence arrangement method for improving WDM module performance according to claim 1, characterized in that: S3 includes the following steps: S3.1 Determine whether the device corresponding to the largest channel insertion loss value and the device corresponding to the smallest end channel insertion loss value among the remaining unsorted devices are the same device; if not, proceed to S3.2; if yes, proceed to S3.

3. S3.2 Set the channel of the device with the largest channel insertion loss value among the remaining unsorted devices as the channel of section 1+a, with the initial value of a being 1; set the channel of the device with the smallest end channel insertion loss value among the remaining unsorted devices as the channel of section n-1. S3.

3. Set the channel of the device with the largest insertion loss value among the remaining unsorted devices as the channel of section 1+a, with the initial value of a being 1; set the channel of the device with the insertion loss value of the other end channel that is closest to the smallest insertion loss value among the remaining unsorted devices as the channel of section n-1.

4. The device sequence arrangement method for improving WDM module performance according to claim 1, characterized in that: The insertion loss data includes the insertion loss value of each device on different channels.

5. The device sequence arrangement method for improving WDM module performance according to claim 1, characterized in that: The end-channel insertion loss value is the insertion loss value of the device at the reflecting end of the end channel; the maximum end-channel insertion loss value is the end-channel insertion loss value with the largest value.

6. The device sequence arrangement method for improving WDM module performance according to claim 1, characterized in that: The theoretical insertion loss value is the sum of the insertion loss value after coupler fusion, the insertion loss value after C-band bandpass device fusion, and the insertion loss value after each device fusion. The maximum theoretical insertion loss is the theoretical insertion loss value with the largest numerical value.

7. The device sequence arrangement method for improving WDM module performance according to claim 6, characterized in that: The maximum channel insertion loss value is the sum of the insertion loss value after coupler fusion, the insertion loss value after C-band bandpass device fusion, the insertion loss value after the previously sorted devices fusion, and the insertion loss value after the current device fusion.

8. The device sequence arrangement method for improving WDM module performance according to claim 7, characterized in that: The insertion loss after coupler fusion is the product of the coupler insertion loss value and the coupler fusion factor; the insertion loss after C-band bandpass device fusion is the product of the C-band bandpass device insertion loss value and the C-band bandpass device fusion factor; the insertion loss after device fusion is the product of the device insertion loss value and the device fusion factor.

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