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OM2210 Coherent Receiver Calibration Source

OM2210 Datasheet

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OM2210 Datasheet

The OM2210 Coherent Receiver Calibration Source includes the capability and software needed for coherent optical receiver calibration. Equipped with two independent free-running lasers and a precision polarization switch, the OM2210 is able to excite the coherent receiver with a known-polarization signal so that the receiver’s linear transfer function can be extracted.

Key capabilities
  • Measure Key Performance Parameters for Coherent Receivers such as Quadrature Phase Angle, Path Gains, and Channel Skew
  • Obtain Calibration Data over Wavelength for Use in Calibrated Optical Field Measurements
  • Calibrate Any Sufficiently Stable Coherent Receiver to Make it Capable of Optical Field Measurements
  • Measure Receiver Hybrid Parameters at Any Heterodyne Frequency within the Oscilloscope Bandwidth
  • Measure Optical Hybrid Properties in Higher-level Receiver Modules
  • The OM2210 can be configured with up to 2 tunable lasers. The OM2012 provides only the tunable laser sources.
Key features
  • Full C-band and/or L-band Tunable Continuous Wave Laser
  • Integrated Wavelength Locker to Support 50 GHz ITU Wavelength Grid
  • Settable Grid Down to 1 GHz
  • Off-grid Tuning for Custom Wavelength Applications
  • User-adjustable Transmit Power Output (+6 to +15.5 dBm) and Wavelength Adjustment During Operation
  • Designed and Verified as RoHS Compliant
  • Class 1M Laser Safety Product
  • IEC/UL 60950-1 Safety Certified
  • Use with the OM1106/ OM4200 Software for Automated Receiver Testing (see the OM1106 product datasheet for details):
    • Calibration of Coherent Receiver Front-end Characteristics for Use in Calibrated Optical Signal Measurements
    • Integrated Dual Polarization Intradyne Coherent Receiver Frequency-domain Characterization
  • Tunable Lasers for Design and Manufacturing Test of 2.5, 10, 40, 100 Gb/s Optical Networking Equipment, including the following:
    • Multi-Service Provisioning Platform (MSSP)
    • Cross Connects
    • Optical Switches
    • Optical Add/Drop Multiplexers
    • Dense Wavelength Division Multiplex (DWDM) Terminals
    • Other Wavelength Division Multiplex (WDM) Metro System Equipment

OM2210 parameter measurements

To measure coherent optical modulation using a minimum of assumptions about the transmitter, it is necessary to measure and correct for any imperfections in the coherent receiver. The OM2210 uses two independent free-running lasers and a precision polarization switch to excite the coherent receiver with a known-polarization signal so that the receiver’s linear transfer function (optical electric field to voltage matrix) can be extracted. The lasers can be tuned across an entire band to obtain measurements vs. channel frequency and heterodyne frequency. The results are plotted and saved in a .mat format file.


OM2210 Coherent Receiver Calibration Source includes the materials and software needed for receiver calibration.

Measurement Typical Uncertainty Note:

  • Channel Skew 0.5 ps between any 4 channels
  • Crosstalk -40 dB Min measurable between any pair of the 4 channels
  • Quadrature phase error 0.2 degrees between quadrature channels
  • Optical phase 0.4 degrees between polarization channels
  • Path gains 0.1 dB relative gains between channels

The lasers used in the OM2210 and OM2012 products integrate a cooled External-cavity Diode Laser (ECDL). The ECDL uses a thermally tuned etalon filter to achieve single-mode operation at selectable wavelengths. The tunable laser has no moving parts and shares many design elements of standard Distributed Feedback Lasers (DFB).

The tunable laser has low Relative Intensity Noise (RIN), a high Side-mode Suppression Ratio (SMSR), a narrow linewidth, and accurate wavelengths over typical operating conditions. The product complies with the stringent requirements of 300-pin Multisource Agreement (MSA) transponders and discrete line cards.

The following operating specifications were used in the design of the tunable laser:

  • ITU-T G.692 
  • Telcordia GR-253 
  • Telcordia GR-63 CORE NEBS
  • Telcordia GR-468 CORE

Additional requirements

All hardware needed for coherent receiver calibration is provided with the OM2210 with the following exceptions:

  • Either the OM4000 Series OMA or OM1106 Software is required.
  • The computer is not included. See the OM4000 Series datasheet for computer requirements.
  • The oscilloscope is not provided. The software is compatible with many oscilloscopes. Check for compatibility at time of order. The minimum requirements include: >10 GS/s per channel, >2.5 GHz bandwidth per channel, 4 channels, LAN connection.
  • The DUT is not provided. The DUT must be a dual-polarization intradyne receiver. If the outputs are differential, only 4 may be measured at one time, although TriMode probes are supported that provide automatic switching between P and N.


This device is a Class 1M laser product for use only under the recommended operating conditions and ratings specified in the data sheet. Use of controls or adjustments or performance of procedures other than those specified in the data sheet may result in hazardous radiation exposure.

Invisible laser radiation – Do not view the laser output from this device directly with optical instruments.

This device complies with 21CFR1040.10 except for deviations pursuant to Laser Notice No. 50, dated June 24, 2007.


All specifications are guaranteed unless noted otherwise. All specifications apply to all models unless noted otherwise.

Model overview

Specifications are valid over the operating wavelength and temperature range.

Parameter Symbol Minimum Typical Maximum Unit
Optical Output Power Adjustment Range (BOL set points) PcwBOL +7  +15.5  dBm
Optical Power Accuracy EOL PsEOL ±1  dB
Optical Output Power Step Size .01  dB
LsDisable Optical Output Power -45  dBm
Operating Frequency Range (50 GHz channel spacing on ITU grid) ν (C-band) 196.25  191.25  THz
ν (L-band) 191.25  186.25  THz
Operating Wavelength Range (50 GHz channel spacing on ITU grid) λ (C-band) 1527.60  1567.54  nm
λ (L-band) 1567.54  1609.62  nm
Wavelength Accuracy EOL 1 Δλacc ±2.5  GHz
Linewidth [FWHM (–3 dB), instantaneous] Δλ 100  kHz
Side Mode Suppression Ratio SMSR 40  55  dB
RIN for 13 dBm Output Power 2 RIN13 -145  dB/Hz
RIN for 7 dBm Output Power 2 RIN7 -140  dB/Hz
Back Reflection Rb -14  dB
Optical Isolation 30  dB
Polarization Extinction Ratio (Unconnectorized) Er, p 20  dB
SSER SSER 40  55  dB
Time to Frequency and Power Lock (Warm start) t1 15  25  sec
Time to Frequency and Power Lock (Cold start) t2 60  sec
Time to Light from LsEnable (Warm start) 10  sec

1Measured from center with path to ±10 pm.

2RIN is specified for 10 MHz to 40 GHz.

+10 to +35 °C
-20 to +70 °C, noncondensing humidity
15% to 80% relative humidity, noncondensing
Power requirements
100/115/230 V AC, ~50 to 60 Hz, 1 power cable, max. 100 VA
Calibration interval
1 year

Ordering information

Coherent Receiver Calibration Source. Contains the laser source(s), polarization switch, optical power meter, power splitter, hardware control drivers, and calibration software needed for optical receiver characterization. It is used together with the OM4000 or OM1106 products to provide calibrated optical signal measurements.
Tunable Laser Source. May be ordered if only the laser sources are required without the polarization switch or calibration software.

OM2210 Coherent Receiver Calibration Source or OM2012 Tunable Laser Source require choice of laser configuration options.

OM2210 options
1 C-band laser, polarization switch
1 L-band laser, polarization switch
2 C-band lasers, plus polarization switch
2 L-band lasers, plus polarization switch
C- and L-band lasers, plus polarization switch
No laser, C+L polarization switch only
OM2012 options
2 C-band lasers
2 L-band lasers
C- and L-band lasers
User manual options
Opt. L0
English manual
Power plug options
Opt. A0
North America power plug (115 V, 60 Hz)
Opt. A1
Universal Euro power plug (220 V, 50 Hz)
Opt. A2
United Kingdom power plug (240 V, 50 Hz)
Opt. A3
Australia power plug (240 V, 50 Hz)
Opt. A5
Switzerland power plug (220 V, 50 Hz)
Opt. A6
Japan power plug (100 V, 50/60 Hz)
Opt. A10
China power plug (50 Hz)
Opt. A11
India power plug (50 Hz)
Opt. A12
Brazil power plug (60 Hz)
Service options
Opt. C3
Calibration Service 3 Years
Opt. C5
Calibration Service 5 Years
Opt. D1
Calibration Data Report
Opt. D3
Calibration Data Report 3 Years (with Opt. C3)
Opt. D5
Calibration Data Report 5 Years (with Opt. C5)
Opt. G5
Complete Care 5 Years (includes loaner, scheduled calibration, and more)
Opt. R3
Repair Service 3 Years (including warranty)
Opt. R3DW

Repair Service Coverage 3 Years (includes product warranty period). 3-year period starts at time of instrument purchase

Opt. R5
Repair Service 5 Years (including warranty)
Opt. R5DW

Repair Service Coverage 5 Years (includes product warranty period). 5-year period starts at time of instrument purchase