ASOC®Single-wavelength
Single-fibre Bi-directional
Optical Transceivers
Bookham Technology offers a range of ASOC optical
transceivers that are designed for single-fibre networks, for
use in exposed locations such as street cabinets.
This product summary describes transceivers that are suitable
for point-to-point applications, including SDH and PDH.
A low-noise AGC transimpedance amplifier and
decoupling capacitors are integrated into the package to
increase the sensitivity of the receiver. The differential
receiver outputs can be connected directly to a low-pass
filter and limiting amplifier.
For more detailed product information or price enquiries,
please contact your regional sales office or
e-mail sales@bookham.com
Features
■Uncooled operation from -40oC to +85oC
■Low threshold current Fabry-Perot lasers
■Data rates up to STM-1 (155 Mbit/s)
■Low profile 14-pin DIL package
■Wide dynamic range receiver amplifier
■Direct interface to limiting amplifier
■Designed to meet GR-468-CORE
Applications
■Access networks
■Duplex point-to-point links on a single fibre
■Fibre to the kerb (FTTK)
■Fibre to the cabinet (FTTC)
■Fibre to the business or office (FTTB/FTTO)
■15 km line extenders – single-fibre implementation for
G.957 SDH STM-1 Intra-office (I-1) and
Short-haul (S-1.1) applications
■G.981 PDH links including TCM (Time-compression
multiplexing)
■Protected link budgets of 8dB and 12+1dB at STM-1
■Extended link budgets for half-duplex
(Ping-Pong) operation
With Internal AGC Transimpedance Amplifier
For 8dB and 12+1dB point-to-point links at STM-1
1310nm Transmit / 1310nm Receive
BKM-2120 Family
Optical Communication through Silicon
Fabry-Perot
laser diode
silicon-on-
insulator
substrate
monitor
photodiode
pig-tailed
fibre
silicon
waveguide
transimpedance
amplifier
receiver
photodiode
optical transmit/receive
BKM-2123-A-11
1310nm
-7dBm
-21dBm
8dB
7 mA
SDH I-1
Typical values: (-40oC to +85oC)
Transmit/receive wavelength
Mean power in fibre
Duplex sensitivity
Protected link budget at STM-1
Threshold current (Ith) @ 25oC
Application example
ASOC BKM-2120 Family Members
Evaluation Boards
To test these transceivers for your application, an evaluation board is available.
Please contact your regional office for more details about the BKM-2958-V-03.
Transceiver Modules
Complete electronic modules are available to significantly shorten your product
development cycle by removing the time needed for analogue board design.
Contact your regional office for details.
BKM-2123-A-21
1310nm
-7dBm
-25dBm
12+1dB
7 mA
PDH, SDH S-1.1
Package Outline
Pin-Out Diagram
BKM-2123-A-11-FP or BKM-2123-A-21-FP
BKM-2123-A-11-SP or BKM-2123-A-21-SP
Termination Options Include:
FC/PC Connector
SC/PC Connector
IMPORTANT NOTICE
Bookham Technology has a policy of
continuous improvement, as a result
certain parameters detailed on this
flyer may be subject to change
without notice. If you are interested
in a particular product please request
the product specification datasheet,
available from any Bookham
Technology sales representative.
Dimensions in mm
FM39955
ISO 9001
REV. 5.0 AUG 2000
©Bookham Technology 2000
Bookham & ASOC are registered trademarks
of Bookham Technology plc
www.bookham.com
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UK Headquarters
Bookham Technology plc
90 Milton Park
Abingdon, Oxfordshire
OX14 4RY UK
Tel: +44 1235 827200
Fax: +44 1235 827201
E-mail: sales@bookham.com
US
Bookham Technology Inc
8521 Six Forks Road
Suite 305, Raleigh
NC 27615 US
Tel: +1 919 870 6419
Fax: +1 919 870 6766
E-mail: raleigh@bookham.com
US
Bookham Technology Inc
2055 Gateway Place
Suite 400, San Jose
CA 95110 US
Tel: +1 408 451 3940
Fax: +1 408 441 9152
E-mail: sanjose@bookham.com
Japan
Bookham Technology KK
KSP W300C, 3-2-1 Sakado
Takatsu-ku, Kawasaki 213-0012
Japan
Tel: +81 44 850 8800
Fax: +81 44 850 8801
E-mail: kawasaki@bookham.com
France
Bookham Technology plc
Atria Paris-Charenton
5 Place des Marseillais,
94227 Charenton le Pont
Cedex, France
Tel: +33 1 4676 6017
Fax: +33 1 4676 6004
E-mail: paris@bookham.com
Pin Name
1 Transmit ground
2 Monitor photodiode anode
3 Monitor photodiode cathode
4 Transmit ground
5 Laser diode cathode
6 Laser diode anode
7 Transmit ground
8 Receive data -
9 Receive data +
10 Receive voltage supply
11 Receive ground
12 Not connected*
13 Do not connect
14 Case
*For new applications, we recommend that photodiode bias should
be applied to pin 12. This will provide flexibility for future upgrade.
8 9 10 11 12 13 14
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