Document
Fiber Optics
Medium Power BIDI® Optical Standard Module 1310 nm Emitting, 1310 nm Receiving
SBM52214x
Features • Designed for application in passive-optical networks • Integrated Wavelength Division Multiplexer (WDM) or Beam Splitter • Bi-Directional Transmission in one optical window • Single fiber solution • FP-Laser Diode with Multi-Quantum Well structure • Class 3B Laser Product • Suitable for bit rates up to 1.25 Gbit/s • Ternary Photodiode at rear mirror for monitoring and control of radiant power • Low noise / high bandwidth PIN diode • Hermetically sealed subcomponents, similar to TO 46 • With singlemode fiber pigtail
BIDI® is a registered trademark of Infineon Technologies
Data Sheet
1
2002-05-01
SBM52214x
Pin Configuration Pin Configuration
Transmitter (bottom view)
2.54 mm 2 1 3 4
Pinning 1 (on request)
LD 1 4
2 3 MD
Pinning 2 (Standard)
1
2 LD 3 MD
4
Figure 1
Transmitter
Receiver (bottom view)
2.54 mm
Pinning 1 (Standard)
Pinning 1
3 1 2
3 2
1
2.54 mm 3
Pinning 2 (on request)
1
3
Pinning 2
2
1 2
Figure 2
Receiver
Available Pinnings Type SBM52214x Transmitter 2 (Standard) Receiver 1 (Standard)
Other Pinnings on request / different drawing set required for non standard pinning
Data Sheet
2
2002-05-01
SBM52214x
Description Description The Infineon module for bidirectional optical transmission has been designed for different optical networks structures. In the last few years the structure has changed from point to point planned for Broad band ISDN to a point to multipoint passive optical network (PON) architecture for the optical network in the subscriber loop. A transceiver can be realized with discrete elements (Figure 3). Transmitter and receiver with pigtails are connected with a fiber-coupler (2:1 or 2:2, wavelength independent or WDM).
Transmitter Coupler Receiver 2:1 or 2:2 3 dB wavelength independent or wavelength division multiplexing
Figure 3
Realization with Discrete Elements
Infineon has realized this transceiver configuration in a compact module called a BIDI® (Figure 4). This module is especially suitable for separating the opposing signals at the ends of a link. It replaces a discrete solution with a transmitter, receiver and coupler. The basic devices are a laser diode and a photodiode, each in a TO package, plus the filter in the beam path. A lens in the TO laser concentrates the light and enables it to be launched into the single-mode fiber of the module. In the same way the light from the fiber is focused onto the small, light-sensitive area of the photodiode to produce a high photo current. The mirror for coupling out the received signal is arranged in the beam so that the transmitter and receiver are at right angles to each other. This means the greatest possible degree of freedom in the layout of the electric circuit.
Data Sheet
3
2002-05-01
SBM52214x
Description
Beam Splitter
Glass Lens
TOLaser
Fiber
TO-Detector
Figure 4
Compact Realization of the Transceiver in One Mod.