For the upstream passive optical network (PON), we design and evaluate an intensity modulation quaternary pulse amplitude modulation (PAM-4) with the four coherent receivers in terms of Homodyne coherent and balanced detection in polarization multiplexing. The obtained simulation results validate the 100Gbps coherent upstream PAM-PON scheme with the successful transmission over the C-band standard single mode fiber.
In order to effectively solve the problem of high reliability of computing units in harsh environments, a design method for PHYTIUM computing units based on OpenVPX is proposed. Firstly, the characteristics of the OpenVPX bus specification are analyzed, Secondly, the functional modules of the PHYTIUM computing unit are divided, and the design process of each module circuit is given, including the parameter calculation process. Thirdly, the PCB layout and routing rules of the computing unit are given. Finally, the feasibility and effectiveness of the design are proved through analysis and experimental verification.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.