Finisar HFE4083-322 Manuel D’Utilisation

FEATURES: 

Designed for drive currents

between 5 and 15 mA

Optimized for low dependence

of electrical properties over

temperature

High speed 

≥1 GHz

Two different laser/

photodiode polarities

Attenuating coating also

available

Packaged with a photodetector

1.25GBPS 850NM VCSEL

TO-46 PACKAGE

HFE408X-322

DATA 

SHEET

The HFE408x-322 is a high-performance 850 nm VCSEL (Vertical Cavity Surface-

Emitting Laser) packaged for high-speed data communications.  This product

combines all the performance advantages of the VCSEL with a custom

designed power monitor diode, and is designed for ease of use by the module

designer and manufacturer. The power monitor diode can be used with

appropriate feedback control circuitry to set a maximum power level for each

VCSEL, simplifying design for high data rate communication and eye safety.

The HFE408x-322 is a high radiance VCSEL  designed to convert electrical

current into optical power that can be used in fiber optic communications and

other applications.  As the current varies above threshold, the light intensity

increases proportionally.  

The HFE408x-322 is designed to be used with inexpensive silicon or gallium

arsenide detectors, but excellent performance can also be achieved with some

indium gallium arsenide detectors.

The low drive current requirement makes direct drive from PECL (Positive

Emitter Coupled Logic) or EML (Emitter Coupled Logic) gates possible and

eases driver design.

The HFE408x-322 is designed to interface with 50/125 and 62.5/125 

µm multi-

mode fiber. They product circularly symmetric, non-astigmatic, narrow divergence

beams that, with appropriate lensing, fiber couple all of the emitter power.

Part Number

Description

HFE4083-322

Unattenuated VCSEL with Back Monitor Photodiode - VCSEL Anode Common

HFE4084-322

Unattenuated VCSEL with Back Monitor Photodiode - VCSEL Cathode Common