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O/C Band 70 GHz Ring Resonator Modulator


The plasmonic Ring Resonator Modulator (RRM) is the choice for high-speed IM/DD and low insertion loss.

Key Features

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    3-dB electro-optic bandwidth >70 GHz

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    Lumped, low-capacitance RF design

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    O/C-band operation

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    Differential-drive configuration


The plasmonic Ring Resonator Modulator (RRM) is an ideal solution for high-speed electro optic conversion in the O and C band. Featuring a bandwidth of beyond 70 GHz makes it a first choice for applications in measurement systems, radio-over-fiber (RoF) systems and for high-data-rate optical transport.

The RRM has a resonant spectrum with peaks and extinctions. This allows for a change of the operating point by tuning the wavelength of the laser source, making an additional voltage source obsolete.

Related Papers

Variant Selector

EO bandwidthOptical bandRR variantOrdering code
70 GHzO banddifferential driveRRM-P70-ow
70 GHzC banddifferential driveRRM-P70-cw

Performance Data

O bandC band
Peak wavelength1310 nm1550 nm
Insertion loss (IL)<11 dB<9 dB
Static extinction ratio (ER)>8 dB>8 dB
DC bias on/off voltage<1.5 V<1.5 V
3-dB EO bandwidth>70 GHz>70 GHz
Vп, eq @ 100 kHz, @ 50 Ohm*<2 V<2 V
Free Spectral Range~ 4.7 nm~ 4.7 nm

Maximum Ratings

O bandC band
Optical input power**Contact us0 dBm
RF input power @ 50 Ohm18 dBm18 dBm
DC voltage at RF input0 V0 V
DC bias voltage
DC bias current
15 mA
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 Vh at 20°C with a Vdrive degradation < 10%.

Mechanical and Optical Specifications

Optical input and outputSMF/PM with FC/APC connectors
Electrical RF interfaceDifferential, 1 mm female
Electrical DC interface2x DC pins