Tunable Filter based Optical Add/Drop Technology (TOADM) Jay - - PowerPoint PPT Presentation

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Tunable Filter based Optical Add/Drop Technology (TOADM) Jay - - PowerPoint PPT Presentation

Aug 23, 2022 177 likes •405 views

Tunable Filter based Optical Add/Drop Technology (TOADM) Jay Hsieh, Optoplex Corporation Fremont, CA Optoplex Confidential 1 Benefit of Tunability/Reconfig. network Faster and remote provisioning Bandwidth-on-demand Better

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SLIDE 1

Optoplex Confidential 1

Tunable Filter based Optical Add/Drop Technology (TOADM)

Jay Hsieh, Optoplex Corporation Fremont, CA

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SLIDE 2

Optoplex Confidential 2

Benefit of Tunability/Reconfig. network

Faster and remote provisioning Bandwidth-on-demand  Better bandwidth

utilization; transform bandwidth capacity to revenue generating services

Automated network reconfiguration and

restoration  Flexibility, security and cost-

effectiveness

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SLIDE 3

Optoplex Confidential 3

ROADM Optical Networks

Metro Metro Customers Customers Intercity Intercity Metro Metro Customers Customers

ROADM Optical core switch

A B

Source: AT&T

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SLIDE 4

Optoplex Confidential 4

ROADM Technologies

WB (wavelength blocker) + 2-port tunable

filter

WSS (wavelength selective switch) TOADM (tunable optical add/drop module) WSS+ TOADM

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SLIDE 5

Optoplex Confidential 5

ROADM (1) (WB + 2-port tunable filters)

In Express Out Add Drop

1xM Couplers

… …

… …

TF Arrays

… …

… …

WB

Loss >12 dB Loss >10 dB

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SLIDE 6

Optoplex Confidential 6

Application of TF and TOADM

…

Drop

… …

In Express Out Add

1xM Couplers

… …

Drop

… …

2-port TF Arrays

… …

… …

WB Broadcast-and-Select ROADM 3-port TOADM

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SLIDE 7

Optoplex Confidential 7

ROADM (2) Wavelength Selective Switch (WSS)

In Express Drop Channels Add Channels Loss ~5 dB

Grating Demux + MEMS Switchs

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SLIDE 8

Optoplex Confidential 8

ROADM (3) 3-Port Tunable filter(TOADM)

Drop Channels In Add Channels Loss ~3 dB Loss <4 dB Express Out

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SLIDE 9

Optoplex Confidential 9

ROADM (4) WSS + TOADM

In Express Out

…

Drop

… …

…

Drop

… …

…

Drop

… …

…

Drop

… …

WSS

WSS re-groups inputs signals into 4 sets TOADM demux signals in each sub-set

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SLIDE 10

Optoplex Confidential 10

Tunable Filter Technology Comparison

  • 3-Port
  • Multi-cavity

(Thin-film based)

  • Single cavity

(MEMS Based) Latching Athermal High Ch. Isolation Passban d Flat- top

Technology

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SLIDE 11

Optoplex Confidential 11

TOADM Same size as a credit card

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SLIDE 12

Optoplex Confidential 12

Filter Tuning Mechanism

Express channel d

θ

All wavelength

λdrop λdrop= f (n,d,θ )

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SLIDE 13

Optoplex Confidential 13

TOADM Performance (1)

Drop Channels (100 GHz 3-port, single channel)

  • 40
  • 35
  • 30
  • 25
  • 20
  • 15
  • 10
  • 5

1525 1530 1535 1540 1545 1550 1555 1560 1565

nm dB

Wavelength (nm) Insertion Loss (dB)

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SLIDE 14

Optoplex Confidential 14

TOADM Performance (2)

Express Channels (100 GHz 3-port, single channel)

  • 40
  • 35
  • 30
  • 25
  • 20
  • 15
  • 10
  • 5

1525 1530 1535 1540 1545 1550 1555 1560 1565

nm dB

Wavelength (nm) Insertion Loss (dB)

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SLIDE 15

Optoplex Confidential 15

100 GHz Tunable Filter Performance (3)

IL vs Channel Number

1.35 1.40 1.45 1.50 1.55 1.60 1.65 10 20 30 40

Channel Number Insertion Loss (dB)

Drop Channel (100 GHz 3-port, single channel)

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SLIDE 16

Optoplex Confidential 16

100 GHz Tunable Filter Performance (4)

Bandwidth vs Channel Number

0.1 0.3 0.5 0.7 0.9 1.1 10 20 30 40 Channel Number Bandwidth (nm) PB @ 0.5dB SB @ 25dB

Drop Channel (100 GHz 3-port, single channel)

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SLIDE 17

Optoplex Confidential 17

100 GHz Tunable Filter Performance (5) flat top, high isolation

Channel 20 (CW: 1561.42 nm)

  • 60
  • 50
  • 40
  • 30
  • 20
  • 10

1559.5 1560.5 1561.5 1562.5 1563.5

Wavelength (nm) Insertion Loss (dB)

Drop Channels Express Channels

Channel 59 (CW: 1530.33 nm)

  • 60
  • 50
  • 40
  • 30
  • 20
  • 10

1528.2 1529.2 1530.2 1531.2 1532.2

Wavelength (nm) Insertion Loss (dB)

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SLIDE 18

Optoplex Confidential 18

TOADM Performance (6)

performance at various temperatures

  • 70
  • 60
  • 50
  • 40
  • 30
  • 20
  • 10

1544 1545 1546 1547 1548

Wavelength (nm) Insertion Loss (dB)

Drop Ch 39, -10C Exp Ch 39, -10C Drop Ch 39, 5C Exp Ch 39, 5C Drop Ch 39, 23C Exp Ch 39, 23C Drop Ch 39, 45C Exp Ch 39, 45C

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SLIDE 19

Optoplex Confidential 19

Band-drop TOADM (Band drop TOADM + colorless demux)

Tunable Filter 4 Skip 0

Input Express

4 Dropped Channels Drop

Colorless Demux

Demux

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SLIDE 20

Optoplex Confidential 20

Band drop TOADM Performance (1)

Drop Channels (100 GHz 3-port, 4 skip 1)

  • 40
  • 35
  • 30
  • 25
  • 20
  • 15
  • 10
  • 5

1525 1530 1535 1540 1545 1550 1555 1560 1565 nm dB

Wavelength (nm) Insertion Loss (dB)

4 skip 0 100 G, 4-skip-0, drop channels

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SLIDE 21

Optoplex Confidential 21

Band drop TOADM Performance (2)

Express Channels (100 GHz 3-port, 4 skip 1)

  • 40
  • 35
  • 30
  • 25
  • 20
  • 15
  • 10
  • 5

1525 1530 1535 1540 1545 1550 1555 1560 1565 nm dB

Wavelength (nm) Insertion Loss (dB)

100G, 4-skip-0 express channels

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SLIDE 22

Optoplex Confidential 22

Summary

It has been proved that thin-film based tunable optical

add/drop (TOADM) technologies provides a cost- effective, high performance, low technical risk solution for building a reconfigurable optical network.