HFBR-0566 Avago Technologies US Inc., HFBR-0566 Datasheet - Page 3

• Manufacturer Part Number: HFBR-0566
• Description: Fiber Optic Development Tools MT-RJ 622Mb/s Fast E Evaluation Kit
• Manufacturer: Avago Technologies US Inc.

Specifications of HFBR-0566

• Description/function: Fiber Optic Kit
• For Use With/related Products: HFBR-5908E, HFCT-5908E
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Functional Description
Transmitter Section
Design
The transmitter section of the HFBR/HFCT-5908E uses
a buried heterostructure Fabry Perot laser as its optical
source. The package of this laser is designed to allow
repeatable coupling into single mode fiber for the HFCT-
5908E and multimode fiber for the HFBR-5908E. In addition,
this package has been designed to be compliant with IEC
825 Class 1 and CDRH Class I eye safety requirements. The
optical output is controlled by a custom IC which detects
the laser output via the monitor photodiode. This IC
provides both dc and ac current drive to the laser to ensure
correct modulation, eye diagram and extinction ratio over
temperature, supply voltage and life.
Figure 2. Simplified Transmitter Schematic
3
DATA
DATA
INPUT
PECL
MODULATOR
LASER
LASER BIAS
LASER BIAS
CONTROL
DRIVER
LASER
(rear facet monitor)
PHOTODIODE