Oclaro has now achieved volume production of its lithium niobate (LiNbO3) Polarization Multiplexed Quad Mach-Zehnder (PM-QMZ) modulators, which enable data rates up to 400G on a single wavelength.
The Oclaro single carrier PM-QMZ lithium niobate external modulator is a high electro-optic bandwidth PM-QMZ device that integrates into a hermetic package an input beam splitter, four parallel Mach-Zehnder modulators configured for I-Q modulation, a polarization combiner, and monitor photodiodes for power and bias control. Key features:
- 3dB electro-optic bandwidth exceeding 30GHz.
- Extinction ratio above 25dB to enable complex modulation formats.
- Insertion loss below 12dB for high efficiency.
- Supports L-Band operation similar to all other Oclaro LiNbO3 modulators