Fiber Optic Connectors

Image Part Number Description / PDF Quantity Rfq
AX102207

AX102207

Belden

OPTIMAX LC KEYED MM 62.5

0

AX105202-B25

AX105202-B25

Belden

FX BR UNIVERSAL LC OM3-4 25/PK

0

AX105203-B25

AX105203-B25

Belden

FX BR UNIVERSAL LC SM 25/PK

0

AX103036

AX103036

Belden

FXM MOD 12F MM LC KEY AQ

0

AX105232-B25

AX105232-B25

Belden

FX BR U LC KEYED OR OM4 25/PK

0

AX103179

AX103179

Belden

OPTIMAX LC KEYED MM 50

0

AX105220-B25

AX105220-B25

Belden

FX BR U LC KEYED OR OM1 25/PK

0

AX101983

AX101983

Belden

OPTIMAX SM LC CONNECTOR

0

AX102206

AX102206

Belden

OPTIMAX LC KEYED MM 62.5

0

AX105205-S1

AX105205-S1

Belden

FX BR UNIVERSAL SC OM1 1/PK

0

AX105007-S1

AX105007-S1

Belden

MPO KEY-UP KEY-DOWN, SX, 1/PK

0

AX103171

AX103171

Belden

OPTIMAX LC KEYED MM 62.5

0

AX105010-B25

AX105010-B25

Belden

MPO KEY-UP KEY-UP, SX, FLANGED

0

AX101791

AX101791

Belden

OPTIMAX ST SINGLEMODE

0

AX105008-B25

AX105008-B25

Belden

SC/APC, GREEN, SX, 25/PK

0

AX105214-B25

AX105214-B25

Belden

FX BR UNIV JACKT 2MM BOOT 25/P

0

AX105005-B25

AX105005-B25

Belden

SC, BLUE, SX, FLANGED 25/PK

0

AX101982

AX101982

Belden

OPTIMAX 50 UM LC CONNECT

0

AX104511-B25

AX104511-B25

Belden

LC DUPLEX ICON, YELLOW, PK25

0

AX105213-S1

AX105213-S1

Belden

FX BR UNIVERSAL ST SM 1/PK

0

Fiber Optic Connectors

1. Overview

Fiber optic connectors are opto-mechanical devices that align and join optical fibers to enable light transmission. They play a critical role in telecommunications, data centers, and industrial systems by enabling rapid deployment, maintenance, and scalability of fiber networks. Modern advancements require connectors to support higher bandwidths, lower loss, and robust environmental performance.

2. Major Types and Functional Classification

TypeFunctional FeaturesApplication Examples
LC (Lucent Connector)Push-pull latch mechanism, compact sizeDatacom transceivers, SFP modules
SC (Subscriber Connector)Double-click latch, high durabilityTelecom networks, PON systems
ST (Straight Tip)Bayonet mount, quick connect/disconnectEnterprise networks, legacy systems
FC (Ferrule Connector)Screw-on design, vibration resistanceTest equipment, high-vibration environments
MPO/MTP (Multi-fiber Push On)Multi-fiber alignment (up to 24 fibers)Data center backbone, 400G Ethernet

3. Structure and Components

Typical fiber optic connectors consist of: - Ferrule: Ceramic, polymer, or metal tube holding fiber end - Adapter sleeve: Aligns ferrules in mating connections - Cable boot: Stress relief for fiber cable - Housing: Protective enclosure (ABS/polycarbonate) - Dust cap: Protects endface from contamination

4. Key Technical Specifications

ParameterTypical RangeSignificance
Insertion Loss (dB)0.1-0.5 dBMeasures signal attenuation at connection point
Return Loss (dB)20-60 dBReflectance performance affecting system stability
Endface Geometry ( m)Radius: 10-25mmApex offset & fiber height impact optical contact
Durability (Mating Cycles)500-2000 cyclesLongevity under repeated use
Operating Temperature-40 C to +85 CEnvironmental reliability

5. Application Areas

  • Telecommunications: 5G backhaul, FTTH networks
  • Data Centers: Hyperscale server interconnects
  • Industrial: Harsh environment sensor systems
  • Medical: Endoscopic imaging equipment
  • Aerospace: Avionics fiber harnesses

6. Leading Manufacturers and Products

ManufacturerRepresentative Products
Amphenol Fiber SolutionsCS Series connectors, OptiMPO
TE ConnectivityCONEC LX-5, MULTILANE MPO
3MVolition Field Installable Connectors
Senko Advanced ComponentsSN Series singlemode connectors

7. Selection Guidelines

Key considerations include: - Transmission requirements (singlemode/multimode) - Environmental conditions (temperature, vibration) - Space constraints (LC preferred for high-density) - Termination method (factory terminated vs field installable) - Cost vs performance trade-offs

8. Industry Trends

Emerging trends include: - Migration to 8 angled physical contact (APC) for 400G+ systems - Miniaturization (CS/MRJ21 connectors for 1RU equipment) - Smart connectors with embedded diagnostics - Increased adoption of polymer ferrules for cost-sensitive applications - Standardization of multi-fiber interfaces (MPO Type II/III)

9. Real-world Application Case

A hyperscale data center implemented MPO-12 connectors for 100G parallel optics, achieving 40% space reduction compared to LC-based solutions. The design incorporated anti-rotation keying to prevent misalignment in high-density patch panels.

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