Passive Optical Components

8/13/2019 Passive Optical Components

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Passive Optical Devices

Introduction

Beijing R&D Center


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content

Connector Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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content

Connector

Splitter

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Fiber connector type

Belt Fiber ConnectorMTPTM/MPO, MPXTM,MD


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Key Features

Low insertion lossTypical insertion loss 0.15 dB

(against master jumper)

Return loss greater than 50 dB

Stable, reliable, excellent

performanceTunable after assembly

Applications

Telecommunication networks

Optical transmission backbone

CATV networks

Fiberoptic test and

measurement systems

LANs and WANs

Connector, FC/PC

Series


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Key Features

Typical insertion loss 0.15 dB

(against master jumper)

Return loss greater than 50 dB

Stable, reliable, excellent

performance

Tunable after assembly

Applications

Telecommunication networks

Optical transmission backbone

CATV networks

Fiberoptic test and

measurement systems

LANs and WANs

Connector, SC/PC

Series


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Main specific of connector

IL: Insertion Loss

Return Loss(RL)

Repeatability and Exchangeability


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content

Connector

Splitter

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Splitter

Fuse taped and Arrowed Wavelength Guider

Application: Power division, Optical

Monitor(Tap), Coarse Wavelength

Division Multiplexing.


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Specific of Splitter

Insertion Loss

Additional Loss

Splitting Ratio

Directionality

Polarization Dependant Loss (PDL)


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Fiber Bragg Grating

Reflective narrow-band filter1 2 3 4

3

1 2 4

UV laser

phase mask

photosensitive fiber

Temperature Compensation is Required


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Application of Fiber Bragg Grating

Wavelength Locker (Fiber laer or LD)

ADD/DROP filter (with circulator)

Single Channel Dispersion Compensator

(with circulator)

EDFA Gain Flatness filter (Long Period

type)

Sensor


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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MUX/DMUX(Multiplexier and De-

Multiplexier): Coupler Type Coupler type, only for Mux

Low cost, High Insertion Loss

IN OUT


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Multiplexier): Thin Film Type Interference Thin Film Medium Type

Low IL, good Thermal Performance, Poor

channel conformance in Multi-channel caseInput Light1, 2... n

Multi-layer Thin film Medium

1

2

3

n

n-1


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Multiplexier): AWG Type Arrowed Wavelength Guider (AWG)

More channel number, wide passing bandwidth,

Temperature control required


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Multiplexier): Grating Type Grating Multi-channel, Good Thermal Performance, High

Isolation, Compact in Size, Gauss type filtercurve, not good for cascading situation

Input12... 8)

1

2

3

7

8


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Specific of MUX/DMUX(Multiplexier

and De-Multiplexier) Channel Number

Center wavelength

Bandwidth (-1dB/-3dB/-20dB) Insertion Loss and Conformance

Adjacent/Non Adjacent Channel Isolation

PDL Polarization Mode Dispersion PMD

Thermal Performance


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Specific of MUX/DMUX(Multiplexier

and De-Multiplexier)


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Application of MUX/DMUX

(Multiplexier and De-Multiplexier) Optical Service Multiplexing and De-

Multiplexing

Optical Supervisory Channel Mux/Dmux

Raman Amplifier Pump power coupling


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Key Features

Low insertion loss

Low dispersionLow insertion loss

High channel isolation

Wide clear bandwidth

Full C- or L-band coverage

Athermal design

Applications

Comb filter

Extend existing network capacityBridge existing and new DWDM

platforms

Ultra-dense DWDM mux/demux

and add/drop

Bidirectional networks

Comb filter

Interleaver


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Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Tunable filter

Fabry-Perot Filter


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Specific of Tunable filter

Tuning Range

Filter Bandwidth (-3dB, -20dB)

Insertion Loss

PMD


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Application of Tunable Filter

Tunable Receiver

Tunable Transmitter

Optical Spectrum Scanner (OPM)


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Isolator

Optical Diode

Faraday Rotator


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Specific of Isolator

IL

Reverse Isolation

Return Loss

PDL

PMD


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Application of Isolator

Isolating the output of LD

Inner Isolation of EDFA


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Circulator

B.C. B.C.B.C.

F.R. F.R.

Port 1Port 2

Port 3

3 Port Circulator Structure

1 to 2 unidirectional

2 to 3 unidirectional

Others are Isolated

BC.: Birefringence Crystal F.R.:Faraday Rotator


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Application of Circulator

ADD/DROP

Dispersion Compensation


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Type of Attenuator

Fixed Attenuator, Manually Variable OpticalAttenuator, Electrically Variable OpticalAttenuator

Electrically Variable Optical :Mechanical type ,Wave guide type


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Specific of Optical Attenuator

Insertion Loss

Insertion Range

Accuracy of Loss

Return Loss

Spectrum(Wavelength) Performance

PDL


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Application of Optical

Attenuator Optical Power adjust

Optical power control

EDFA gain flatness control


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Optical Switch: MEMS type

MEMS (micro-electro-mechanical systems)


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MEMS (micro-electro-mechanical systems)

Optical Switch: MEMS type


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Liquid Crystalchange the Polarization of Liquid Crystal by the

electrical Voltage to realize optical switchingtechnique is not matured yet, under further research.

Optical Switch type :

Liquid Crystal type


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Bubble Optical Switch Bubble Optical Switch

introduced byAgilent Technologies Inc.,

adopting the patent technology of HP jet printer.To change the optical direction by injecting and

erasing liquid drop in the Optical Path.
http://www.agilent.com/http://www.agilent.com/


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Thermal Optical Switch Thermal Optical Switchchange the interferometers leg refractive

index by heating to realize 2*2 optical switch

by using AWG technology, multiple switchescascading can form 64*64 switch

High Insertion Loss, Low isolation,wavelength sensitive, huge power consumption


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Holographic Optical Switch

By using Voltage Sensitive Bragg grating to realize

wavelength selective switch.Feature in high switching speed, no moving part, low

insertion loss, huge number of Ports

In its Prototype stage


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Specific of Optical Switch

Port Number

Switching Speed

Insertion Loss and Uniformity

Optical Extinction Ratio

Cross Talk

PDL

Life time


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Application of Optical Switch

Optical Switching Protection

OADM

OXC


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content

Connector

Coupler

Bragg Grating Fiber

MUX/DMUX

Interleaver

Tunable Filter

Isolator/Circulator

Attenuator/VOA

Switch

DCF


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Dispersion Compensation Fiber

A special type of fiber used for DC


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Specific of DCF

Dispersion Compensation Amount

Dispersion Slope

Insertion Loss

PDL

Nonlinear

Documents

Passive Optical Components