LMC10NEJ Datasheet, PDF (5/15 Pages) Bookham, Inc. – 10Gb/s Compact InP MZ Modulator with DWDM Laser

Data Sheet
Glossary
BFM Back Facet Monitor diode
CW Continuous wave
EOL End of life
FWHM Full width half maximum
MZ
SOL
Tcase
Pk-pk
Mach-Zehnder interferometer
Start of life
Case temperature
Peak to peak
Notes to Characteristic Tables
[1] Refer to Bookham applications document AN0117 for
Tx case temperature measurement definition.
[2] Deliverable data is provided to set a start of life (SOL)
mean modulated optical power of 4.0dBm, Tcase at
room temperature, using the internal variable optical
attenuator and power tap. Refer to Bookham
applications document AN0132.
[3] The End Of Life (EOL) mean optical power specification
is defined as SOL+/-1dB.
[4] Measured reference to a high speed sampling
oscilloscope (unfiltered). EOL figure does not include
modulator driver component ageing if applicable.
[5] Measured with 1600ps/nm chromatic dispersion, ITU-T
G652 optical fibre, 10.709Gb/s, 2²³-1 PRBS NRZ
sequence. The penalty calculation is made at a BER level
of 10^-10. RX OSNR > 30dB (35dB target), RBW of 0.1nm
using a Bookham standard receiver with differential drive
to modulator. The device is driven directly from a pattern
generator. Receiver decision point self optimised for
amplitude and phase.
[6] At the input to the LMC10NEJ. Driver selection must take
into account modulator driver to transmitter transmission
line losses. Refer to Bookham applications
document AN0137.
[7] Optical return loss of plant attached to LMC10NEJ
fibre connector.
[8] Optical return loss looking back into the LMC10NEJ
averaged over polarisation states, with target value
of +27dB.
[9] This is the requirement for the crossing control loop over
life and temperature relative to SOL measurement at
Tcase = room temperature. Reference application notes
AN0143, AN0132.
[10] Assuming 50% crossing level set at start of life.
[11] Maintain the start of life locking ratio over life to hold
wavelength constant.
[12] Assumes wavelength is set to ITU wavelength at start of
life, closed loop wavelength control by maintaining
constant locking ratio.
[13] Wavelength variation with change in laser drive current at
constant temperature.
[14] The power tap responsivity is bias voltage dependent.
[15] VOA dissipation, current and voltage limits apply
simultaneously. Do not exceed any one limit. Refer to
Bookham applications document AN0132 for parameter
and operating condition definitions.
[16] The thermistor current should not exceed 100 µA to
prevent self-heating effects. The thermistor resistance
varies with temperature according to the following
Steinhart-Hart equation, where C1= 1.2156x10-3, C2=
2.1925x10-4, C3=1.5241x10-7 for the thermistor type
used. Temperature is required in Kelvin.
[17] Slope of the etalon can be positive or negative.
Note: AC parameters such as extinction ratio and waveform
crossing may be system dependent.
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