Finisar HFE4190-441 User Manual

FEATURES: 

850nm multi-mode oxide

isolated VCSEL

Extended Temperature Range

Operation (– 40 to +85 deg

operating range)

Capable of modulation operation

from DC to 2.5Gbps

TO-46 tilt window metal can

component, prealigned into LC

Sleeve

Designed for drive currents

between 3-15mA average 

Packaged with a back monitor

Attenuated window can

2.5GBPS 850NM VCSEL

LC TOSA PACKAGE

HFE419X-441

DATA 

SHEET

These products are high-performance 850nm VCSELs (Vertical Cavity Surface-

Emitting Lasers) designed for high-speed data communications and packaged

with a custom designed power monitor diode. The power monitor diode can

be used with appropriate feedback control circuitry to set a maximum power

level for the VCSEL. These combined features simplify design for high data rate

communication and eye safety.

These products are high radiance VCSELs 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.  

These products are designed to be used with inexpensive silicon or gallium

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

indium gallium arsenide detectors (see HFD3180-103 and HFD3180-108

product data sheets).

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

Emitter Coupled Logic) or ECL (Emitter Coupled Logic) gates possible and eases

driver design.

VCSELs produce circularly symmetric, non-astigmatic, narrow divergence

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

These LC TOSA products are pre-aligned and focused fiber optic transmitters

designed to interface with 50/125 and 62.5/125 

µm multi-mode fiber. 

Part Number

Description

HFE4190-441

LC TOSA with attenuated TO-46 component, VCSEL with Back Monitor

Photodiode, Anode of VCSEL common with Photodiode Cathode

HFE4191-441

LC TOSA with attenuated TO-46 component, VCSEL with Back Monitor

Photodiode, Cathode of VCSEL common with Photodiode Anode