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2016.2

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Block diagram

Active Optical Connector

BF4M Series

Overview

Hirose developed the micro "BF4MC connector" that

enables optical transmission of data between boards

that are incorporated in devices.

It converts an electrical signal that is received from a

board by using the semiconductor component built-in

the connector, and transfers the data via optical fiber.

BF4MC connector is a revolutionary design that enables

easy use of electromagnetic noise-free, insulated, long-

distance, high-speed transmission. These are the merits

of the optical transmission, mounted inside devices

achieving dramatic downsizing and lower power

consumption when compared to existing optical products.

It can be used in a wide range of applications, medic

alappliances Measurement equipments, FA system

etc.

VCSEL

Driver

VCSEL

PD

TIA +

LA

VCSEL: Vertical Cavity Surface Emitting Laser

PD: Photo Diode

TIA: Trans mpedance Amplifier

LA: Limiting Amplifier

Electrical input

BF4 transmitter

BF4 receiver

Optical Fiber

Electrical output

Eye Diagram (Typical) :

Transmission speed 6.25 Gbps, Length 5 meters

5cm

Features

1. Optical transmissions achieved by

simplified electrical connections

Optical signal transmission is accomplished with electronic

connectors and has eliminated the need for cleaning the

mating faces of traditional fiber optic connectors.

2. High-speed, signal transmissions with

no EMI noise.

Optical signal transmissions rated up to 6.25 Gbps

are possible.

Since there is no EMI noise to contend with on the

signal lines, system design time is reduced.

3. Highly flexible optical fiber

Assemblies are made with a highly flexible, optical fiber that

allows for tight bend radiuses when used in small devices.

4. Long-distance, high-speed and high

quality signal transmissions

The BM4M design is capable of high speed and

high quality signal transmissions even over long

transmission distances.

5. Low power consumption

Power consumption is significantly reduced compared

to conventional optical transceiver.

6. Space-saving and low profile

design with 1.5mm height

By using the BF4M, optical transmissions can be

achieved with small for m factor electronic

connectors that save on overall size and valuable

PCB space.

Fig.1

Full-scale

Fig.3

Fig.2

In cases where the application will demand a high level of reliability, such as automotive,

please contact a company representative for further information.