Active Optical Connector
BF4M Series
Block diagram
Electrical input
Optical Fiber
Electrical output
TIA +
LA
VCSEL
Driver
PD
VCSEL
BF4 transmitter
BF4 receiver
PD: Photo Diode
TIA: Trans mpedance Amplifier
LA: Limiting Amplifier
VCSEL: Vertical Cavity Surface Emitting Laser
Fig.1
Overview
Eye Diagram (Typical) :
Transmission speed 6.25 Gbps, Length 5 meters
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.
Fig.2
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.
Full-scale
3. Highly flexible optical fiber
5cm
Assemblies are made with a highly flexible, optical fiber that
allows for tight bend radiuses when used in small devices.
Fig.3
4. Long-distance, high-speed and high
quality signal transmissions
6. Space-saving and low profile
design with 1.5mm height
By using the BF4M, optical transmissions can be
achieved with small form factor electronic
connectors that save on overall size and valuable
PCB space.
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.
In cases where the application will demand a high level of reliability, such as automotive,
please contact a company representative for further information.
1
2016.2e