DP-QPSK Mixer, Optoplex HB-C0CSCS001, Polarization Diversified Optical Hybrid
Optoplex’s 2×4 polarization diversified optical hybrid (aka QPSK Mixer) mixes an incoming signal with a local oscillator. The device features a monolithic optical core integrating a PBS with an interferometer which is also widely used in Optoplex’s interleavers and DPSK-demodulators. This device is athermal, colorless, data-rate independent and compact size. The four outputs of this device can be coupled with four single-ended detectors (see the function diagram below). This platform can also be extended to a 2×8 polarization diversified hybrid to incorporate with 4 pairs of balanced detectors.
The QPSK mixer is a key building block in the ever-popular polarization- and phase-diversified QPSK modulation scheme which is not only one of the leading contenders for the 100-Gb/s systems but also a significant cost-effective alternative for the 40-Gb/s systems where 10-Gb/s modulator and electronics can be used.
Key Features and Benefits
- Free-space bulk-optics design
- Purely passive (no temperature control)
- Low insertion loss, Low phase error, <1 ps skew
- Colorless (wavelength independent)
- Data-rate independent
Applications
- For the next-generation optical transmission system
• Key component for the optical coherent detection
