Tektronix OI1125, OI2125 DATASHEET

Features & Benefits

OI1125 E/O Transmitter

Generates SONET/SDH
Compliant Optical
Waveforms up to 12.5 Gb/s

Internal DFO Laser
at 1550.9 nm

Adjustable Extinction Ratio
from 5 dB to >12 dB
(>12 dB nominal) to Test
with Worst-case Conditions

Accepts a Wide Range of
Input Voltage Levels from

0.25 to 1.5 V

p-p

Remote Operation
and Monitoring

OI2125 O/E Receiver

High Performance Receiver
Supports Data Rates up to

12.5 Gb/s
User-installable Modules

for Clock Recovery at

10.664 Gb/s, 9.953 Gb/s,

2.666 Gb/s, 2.488 Gb/s,
622 Mb/s and 155 Mb/s
Data Rates with a Single
O/E Receiver

Broad Wavelength from
1100 to 1620 nm

High Sensitivity (–16 dBm) to
Detect Low-level Optical
Input Signals

Amplified Electrical Output
to Connect Directly to Most
Commercial Error Analyzers

Applications

Bit Error Rate Testing
Optical Receiver and

Transmitter Testing
Optical Component and

Fiber Loop Testing
Optical Signal Analysis
Remote Operation

for System Integration

Optical Transmitter and Receiver

OI1125 • OI2125

A High-performance Optical Interface for Bit Error
Rate Testing of Optical Systems, Subsystems and
Components up to 12.5 Gb/s

The Tektronix high-performance OI1125 E/O
transmitter and OI2125 O/E receiver offer a
simple and cost-effective solution for generat­ing and receiving SONET/SDH compliant opti­cal signals for bit error rate (BER) testing and
optical signal analysis up to 12.5 Gb/s. Both
include a remote port for easy integration and
remote monitoring and control in a test sys­tem environment. Users can completely con­trol instrument settings, monitor instrument
status and access additional features through
the remote port.

Transmitter Generates
SONET/SDH Compliant Optical
Waveforms up to 12.5 Gb/s for
Testing Optical Subsystems
and Components

Using the internal 1550 nm DFB laser or an
external C-band tunable laser, the OI1125 is
excellent for generating optical signals modu­lated by a high-performance pattern generator
and is designed so most commercial genera­tors connect directly to the modulation input.

The input voltage range (250 mV to 1.5 V)
accommodates most commercial pattern gen­erators for bit error ratio (BER) testing of opti­cal components and receiver testing.The
adjustable extinction ratio allows testing the
receiver sensitivity at worst-case conditions
without complex test setups.The OI1125 also
generates optical signals for optical signal
analysis of components, systems and subsys­tems using a CSA8000 sampling oscilloscope.

Receiver Clock Recovery
and Multi-data Rate Support
Simplify Testing of
High-performance Optical
Transmitters, Laser Diodes,
Optical Components and
Fiber Loops

The OI2125 O/E Receiver receives modulated
optical signals up to 12.5 Gb/s from
transmission systems, including SONET/SDH
compatible systems, and converts them to
electrical signals for further testing by equip­ment such as a bit error rate tester (BERT).
The OI2125 electrical output can be connected

Optical Transmission Test • www.tektronix.com/optical

1

Optical Transmitter and Receiver

OI1125 •OI2125

directly to most commercial error analyzers,
and does not require an external amplifier.
The data and clock output voltage ranges
(0.5 to 1.5 V

p-p

) make the OI2125 an excellent
optical interface for most commercial
error analyzers.

With the optional OM1420 and OM1200
modules, the receiver can extract the clock
on signals up to 10.664 Gb/s (OC-192 FEC).
The recovered clock signal can then be used
to trigger a CSA8000 sampling oscilloscope
or serve as the clock input to an error analyz­er. Used with the Tektronix TDS/CSA8000
series sampling oscilloscope and a pattern
generator, the OI1125 can create modulated
optical signals for high-speed optical
communications testing, extinction ratio
measurements, eye-pattern analysis and
optical signal analysis.The optical signal is
passed through the DUT and received by
the appropriate 80Cxx sampling head on
the oscilloscope.

A single receiver with the OM1420 and

OM1200 modules supports a broad range
of signal bit rates.The OM1420 OC-192
Dual-rate Clock Recovery Module supports
standard OC-192 (9.953 Gb/s) and
OC-192 FEC (10.664 Gb/s). The OM1200
OC-48 Multi-rate Clock Recovery Module
supports OC-48 (2.488 Gb/s), OC-48 FEC
(2.666 Gb/s), OC-12 (622 Mb/s) and
OC-3 (155 Mb/s) rates.

Optical Transmission Test • www.tektronix.com/optical

2

OI1125 eye diagram at 9.953 Gb/s with
OC-192 mask.

OI1125 eye diagram at 12.5 Gb/s with scaled
OC-192 mask.

OI2125 eye diagram at 9.953 Gb/s with
an OC-192 mask.

OI1125 E/O Transmitter Specifications

Specification Min Typ Max Units Comments

Data Rate*

1

2.4 12.5 Gb/s

Data Input Voltage 0.25 1.5 V

p-p

Int. (DFB) Wavelength 1550.82 1550.92 1551.02 nm ±1 nm adjustment

range

Ext. (Modulator) 1530 1565 nm
Wavelength Range*

2

Input Power +5 +12 dBm
Extinction Ratio 12 dB Up to OC-192

10 dB Rates >OC-192
Adjustable Extinction Ratio*3<5 >12 dB (typical)
Peak-to-peak Jitter 0.15 UI Up to OC-192

15 18 ps Rates >OC-192

Data Input Voltage

0.5 to 1.5 V

p-p

Random Jitter 0.02 UI 2 ps

RMS

up to OC-192 Rates >OC-192
Output Power +0 +2 +4 dBm Using the internal laser
Insertion Loss 8 dB
Percent Crossing 45 55 %
Eye Mask Testing*

4

GR-1377-CORE

GR-253-CORE

*1Data rates down to 622 Mb/s are achievable,but specifications are not guaranteed at rates below 2.4 Gb/s.

*

2

Wavelength range from 1565 nm to 1600 nm is achievable, but specifications are not guaranteed above 1565 nm.

*

3

The range of adjustment for the extinction ratio may vary from unit to unit, but is typically 5dB to >12 dB.The OI1125 is calibrated
with the adjustable extinction ratio disabled. Specifications are guaranteeed at the calibrated (fixed) position.

*

4

No mask hits with 5% mask margin for OC-48, OC-192, and 12.5 Gb/s (scaled OC-192 mask).