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Laser & Optoelectronics Progress, Volume. 56, Issue 21, 211301(2019)

Constrained Link Routing Algorithm for Dilated Benes Optical Switching Chips Under Non-Full Configuration

Jinhua Zhang, Baojian Wu*, and Kun Qiu
Author Affiliations
  • School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China
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    Figures&Tables (9)
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    References (23)
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    Two states of 2×2 optical switch. (a) Bar state; (b) cross state

    Fig. 1. Two states of 2×2 optical switch. (a) Bar state; (b) cross state

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    Recursive construction of N×N dilated Benes structure

    Fig. 2. Recursive construction of N×N dilated Benes structure

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    Grouping of the first and eighth stage switches

    Fig. 3. Grouping of the first and eighth stage switches

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    Link path and switch state of the first and eighth stage switches

    Fig. 4. Link path and switch state of the first and eighth stage switches

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    All switch states of 16×16 dilated Benes network

    Fig. 5. All switch states of 16×16 dilated Benes network

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    Maximum number of groups and number of idle optical switches dependent on number of exchange requests

    Fig. 6. Maximum number of groups and number of idle optical switches dependent on number of exchange requests

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    Algorithm redistributes the exchange path when the switch fails

    Fig. 7. Algorithm redistributes the exchange path when the switch fails

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    • Table 1. Input and output exchange requests for 16×16 dilated Benes optical switching network

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      Table 1. Input and output exchange requests for 16×16 dilated Benes optical switching network

      Corresponding switchS(1,1)S(2,1)S(3,1)S(5,1)S(8,1)S(9,1)S10,1S(11,1)S(13,1)S(15,1)
      Input portI1I2I3I5I8I9I10I11I13I15
      Output portO8O13O7O1O5O11O10O15O14O6
      Corresponding switchS(8,8)S(13,8)S(7,8)S1,8S(5,8)S(11,8)S(10,8)S15,8S14,8S(6,8)

    • Table 2. All links and switch states of 16×16 dilated Benes network

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      Table 2. All links and switch states of 16×16 dilated Benes network

      StageNumber of linksBar state switchCross state switch
      First and eighth stageFive links are L1, L2, L3, L4, and L5128
      Second and seventh stageFour links are L6, L7, L8, and L9137
      Third and sixth stageSix links are L10, L11, L12, L13, L14 and L15146
      Fourth and fifth stage713
      Total number of switches154634
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    Jinhua Zhang, Baojian Wu, Kun Qiu. Constrained Link Routing Algorithm for Dilated Benes Optical Switching Chips Under Non-Full Configuration[J]. Laser & Optoelectronics Progress, 2019, 56(21): 211301

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    Paper Information

    Category: Integrated Optics

    Received: Mar. 25, 2019

    Accepted: Apr. 26, 2019

    Published Online: Nov. 2, 2019

    The Author Email: Baojian Wu (bjwu@uestc.edu.cn)

    DOI:10.3788/LOP56.211301

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology