Aiming to become the global leader in chip-scale photonic solutions by deploying Optical Interposer technology to enable the seamless integration of electronics and photonics for a broad range of vertical market applications

Free
Message: Interesting post by godotiscoming in the Off topic forum

McWitty

They are claiming to handle amplitude based modulation, an example is PAM-4. 

There are levels of complexity to modulation. NRZ is like someone signalling you with a flashlight by turning it on and off. Amplitude modulation is like the flashlight having different brightness levels to signal. Coherent -- well my analogy just fell apart. 
Coherent is like if your kitchen clock itself spun around all day. 12 o clock wouldnt always be up. You would have to mentally correct the phase angle and do a "coherent" demod of the time.

Coherent is required for the QAM type modulations that look like dots on a checkerboard. If the checkerboard is spinning you have to determine say where is the true up-down and left-right in order to decide the correct bits.

rogue

Share
New Message
Please login to post a reply