lmc10zeg Bookham, Inc., lmc10zeg Datasheet - Page 5

• Manufacturer Part Number: lmc10zeg
• Description: 10gb/s Compact Modulator With Dwdm Laser
• Manufacturer: Bookham, Inc.

5
Glossary
BFM
CW
EOL
FWHM Full width half maximum
Notes to Characteristic Tables
[1] Refer to Bookham applications document AN0117 for
[2] Specified range over life. Integral VOA set to minimum
[3] Specified range over life. Integral VOA set to maximum
[4] Optical power variation over the operational case
[5] Measurement of AC extinction ratio is to be referenced to
[6] Measured with +/-800ps/nm chromatic dispersion, ITU-T
[7] The differential modulation voltage is the peak to peak
[8] The module is expected to operate without damage into
[9] Optical return loss looking back into the LMC10ZEG
[10] Set to nominal 50% at SOL, does not include effects of
Data Sheet
Tx case temperature measurement definition.
attenuation.
attenuation.
temperature range of the Tx relative to 30C. Improved
power tracking can be achieved by implementing closed
loop power control using an external fiber power monitor
and the LMC10ZEG variable optical attenuator.
a Tektronix CSA8000B with 80C08C plug-in module.
Test conditions: 10.709Gb/s, 2
sequence, 4th order Bessel-Thomson filter [where
specified]. EOL condition includes variations in ER over
the optical power range.
G652 optical fibre, 10.709Gb/s, 2
sequence. The penalty calculation is made at a BER level
of 10
The device is driven directly from a pattern generator.
Receiver decision point self optimised for amplitude and
phase.
voltage that is required to achieve the required optical
extinction ratio. The voltage and its complement must be
AC coupled to each of the Data and Data-bar pins.
a -14dB optical return loss equivalent to a fibre to
air interface.
averaged over polarisation states.
electrical driver aging.
Back Facet Monitor diode
Continuous wave
End of life
-10.
RX OSNR > 30dB (35dB target), RBW of 0.1nm.
23
-1 PRBS NRZ
23
-1 PRBS NRZ
MZ
SOL
Tcase
Pk-pk
[11] Electro-optic bandwidth. (S21 e/o). This measurement is
[12] The thermistor current should not exceed 100 µA to
[13] Measured at operating laser current Iop and an OSA
[14] Maintain the start of life locking ratio over life to hold
[15] Assumes wavelength is set to ITU wavelength at start of
[16] Specified by design, not measured unit to unit.
[17] Wavelength variation with change in laser drive current at
[18] VOA dissipation, current and voltage limits apply
Note: AC parameters such as extinction ratio and waveform
made as a small signal measurement on each arm
separately, 3% smoothed.
prevent self-heating effects. The thermistor resistance
varies with temperature according to the
following equation:
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.
resolution of 0.1nm and a span of 10nm centred on the
peak wavelength.
wavelength constant.
life, closed loop wavelength control by maintaining
constant locking ratio.
constant temperature.
simultaneously. Do not exceed any one limit.
Refer to applications document AN0141.
crossing may be system dependent.
Mach-Zehnder interferometer
Start of life
Case temperature
Peak to peak