HFE4081-321中文资料

Fiber Optic LAN Components HFE408x-321High Speed VCSEL 1.25Gbps

FEATURES

Designed for drive currentsbetween 5 and 15 mA

Optimized for low dependenceof electrical properties overtemperature

High speed ≥1 GHz Two different laser/photodiode polarities Attenuating coating

Packaged with a photodetector

The HFE408x-321 is a high-performance 850 nm VCSEL (Vertical CavitySurface-Emitting Laser) packaged for high-speed data communications. Thisproduct combines all the performance advantages of the VCSEL with a customdesigned power monitor diode. The power monitor diode can be used withappropriate feedback control circuitry to set a maximum power level for eachVCSEL. In addition, built-in power attenuation reduces the effective slopeefficiency. These combined features simplify design for high data ratecommunication and eye safety.

The HFE408x-321 is a high radiance VCSEL designed to convert electricalcurrent into optical power that can be used in fiber optic communications andother applications. As the current varies above threshold, the light intensityincreases proportionally.

The HFE408x-321 is designed to be used with inexpensive silicon or galliumarsenide detectors, but excellent performance can also be achieved with someindium gallium arsenide detectors.

The low drive current requirement makes direct drive from PECL (PositiveEmitter Coupled Logic) or EML (Emitter Coupled Logic) gates possible andeases driver design.

The HFE408x-321 is designed to interface with 50/125 and 62.5/125 µmmultimode fiber. They product circularly symmetric, non-astigmatic, narrowdivergence beams that, with appropriate lensing, fiber couple all of the emitterpower.

Honeywell

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