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C Band 145 GHz IQ Modulator

IQM-C145

Dive into Polariton’s coherent modulation products for high bandwidth and symbol rate above 180 GBaud simplifying your transceiver design and reducing its power dissipation.

Key Features

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    3-dB electro-optic bandwidth >145 GHz

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    Lumped, low-capacitance RF design

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    Chip dimensions 1.5 mm x 2 mm

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    C-band operation

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    Single-ended (SD) or differential-drive (DD) geometry

Description

The plasmonic differential-drive IQ (in-phase and quadrature) electro-optic modulator (EOM) is the choice for high-speed coherent electro-optic conversion in the C band. Featuring a bandwidth beyond 145 GHz, it supports applications by modulating IQ symbols, hence outputting an amplitude and phase modulation.

Driving the chip with the signal and with its inverted version (differential-drive) will provide the best modulation efficiency, specifically since most drivers provide the inverted version of the signal from the start.

Delivered as a chip or semi-packaged chip, this product can be tailored to your needs.

Related Papers

Variant Selector

EO bandwidthOptical bandIQ variantOrdering code
145 GHzC banddifferential driveIQM-C145-cw

Performance Data

SDDD
Peak wavelength1550 nm1550 nm
Insertion loss (IL)<17 dB<17 dB
Static extinction ratio (ER)>25 dB>25 dB
DC bias on/off voltage<1.5 V<1.5 V
3-dB EO bandwidth>145 GHz>110 GHz
Vп, eq @ 100 kHz, @ 50 Ohm*<5 V<5 V

Maximum Ratings

SDDD
Optical input power**6 dBm6 dBm
RF input power @ 50 Ohm18 dBm18 dBm
DC voltage at RF input0 V0 V
DC bias voltage
DC bias current
2.5V
15 mA
2.5V
15 mA
Operating / storage temperature~25°C~25°C

* Plasmonic modulators are high impedance devices. Twice the voltage provided by a 50 Ohm signal source will drop across the plasmonic modulator. Using a DC source or a high impedance matched driver, double the voltage is required to switch the modulator from the on to the off state.
**Operation time of 8000 h at 20°C with a Vπ degradation < 2.5%.

Mechanical and Optical Specifications

SDDD
Optical input and outputGrating coupler (GC), 127 um pitch Grating coupler (GC), 127 um pitch
Center wavelength at GC angle1550 nm at 8°1550 nm at 8°
Optical source neededPeak WL laser sourceTunable laser source, peak ± 10 nm range
Electrical RF interfaceG-S-G, 70 – 215 μm pitchS-S̄, 170 – 400 μm pitch
Electrical DC interface+-/ +-/ +-, 150 μm pitch+-/ +-/ +-, 150 μm pitch