Fiber Optics - Transmitters - Discrete

Image Part Number Description / PDF Quantity Rfq
PDI-E522

PDI-E522

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 850NM PLASTC

0

PDI-E520

PDI-E520

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 950NM PLASTC

0

PDI-E527

PDI-E527

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 660NM PLASTC

0

PDI-E521

PDI-E521

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 880NM PLASTC

0

PDI-E524

PDI-E524

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 470NM PLASTC

0

PDI-E525

PDI-E525

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 530NM PLASTC

0

PDI-E526

PDI-E526

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 660NM PLASTC

0

PDI-E523

PDI-E523

Luna Optoelectronics (Advanced Photonix)

EMITTER FIBER OPTIC 430NM PLASTC

0

Fiber Optics - Transmitters - Discrete

1. Overview

Discrete fiber optic transmitters are optoelectronic devices that convert electrical signals into optical signals through individual component packages. They serve as fundamental building blocks in fiber communication systems, enabling data transmission via modulated light waves. These transmitters play critical roles in telecommunications, data centers, and sensing applications due to their high bandwidth efficiency and electromagnetic interference immunity.

2. Major Types & Functional Classification

TypeFunctional CharacteristicsApplication Examples
LED TransmittersLow-cost, low-power, broad spectral widthShort-distance links ( 2km), premises networks
Laser Diodes (LD)High power, narrow linewidth, high speedLong-haul telecom, CATV systems
VCSELsLow divergence beam, low power consumptionData center interconnects (100G-400G)
Electro-absorption Modulated Lasers (EML)Integrated modulation, low chirpHigh-speed DWDM systems ( 100Gbps)

3. Structure & Components

Typical discrete transmitters consist of: (1) Light source (LED/LD/VCSEL chip), (2) Optical sub-assembly (OSA) with lens/filter, (3) Electrical interface (bonding wires/PCB), (4) Hermetic package (TO-can or surface-mount). Advanced designs integrate drivers/modulators in photonic integrated circuits (PICs).

4. Key Technical Specifications

ParameterSignificance
Wavelength (1270-1610nm)Determines fiber transmission window and dispersion characteristics
Output Power (-20 to +20dBm)Affects transmission distance and signal-to-noise ratio
Modulation Bandwidth (DC-67GHz)Limits maximum data rate capability
Chirp CharacteristicsImpacts dispersion penalty in high-speed systems
Operating Temperature (-40 to +85 C)Determines environmental deployment flexibility

5. Application Domains

Primary industries include: Telecommunications (DWDM networks), Data Centers (QSFP modules), Cable TV (HFC networks), Industrial Sensing (strain/temperature monitoring). Typical equipment: Optical line terminals (OLTs), active optical cables (AOCs), OTDR test instruments.

6. Leading Manufacturers & Products

VendorRepresentative Product
II-VI Incorporated100G CFP EML transmitter
LumentumMulti-junction VCSEL arrays
Finisar (II-VI)TO-Can DFB lasers
BroadcomIntegrated TOSA assemblies
NeoPhotonicsHigh-power narrow-linewidth lasers

7. Selection Guidelines

Key considerations: (1) Match wavelength to system requirements (O-band/C-band), (2) Verify output power vs. link budget needs, (3) Ensure modulation bandwidth exceeds data rate requirements, (4) Evaluate thermal stability for operating environments, (5) Consider packaging form factor (TO/ROSA vs. SMT), (6) Balance cost/performance for volume deployments.

8. Industry Trends

Current development directions include: (1) 400G+ transmission through advanced modulation formats, (2) Silicon photonics integration for cost reduction, (3) Shortwave infrared (SWIR) sources for emerging applications, (4) AI-driven digital signal processing co-design, (5) Environmental compliance with RoHS/Green Photonics initiatives. Market growth in 5G fronthaul and automotive LiDAR applications is driving innovation in compact, low-power transmitters.

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