Silicon-based multiplexer/demultiplexer
a technology of multiplexers and silica, applied in the field of compact sibased mmi mux/demux, can solve the problems of requiring a huge amount of bandwidth for transferring photo, video, music, etc., and achieves the effects of enhancing production yield, high process tolerance, and simplifying the waveguide formation process
Active Publication Date: 2018-11-08
MARVELL ASIA PTE LTD
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Benefits of technology
The solution provides ultra-compact, low-loss, and high-extinction-ratio wavelength management for O-band channels, enhancing bandwidth capacity and integration capabilities beyond the limitations of existing technologies, supporting high-speed serial links and increasing internet bandwidth demands.
Problems solved by technology
But Internet and mobile applications continuously demand a huge amount of bandwidth for transferring photo, video, music, and other multimedia files.
Method used
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[0022]The present invention relates to photonic broadband communication device. More particularly, the present invention provides a Si-based two-wavelength Mux / Demux for O-band. Merely by example, the present invention discloses a compact multimode interference Mux / Demux based on standard 220 nm Silicon-on-Insulator (SOI) substrate with low transmission loss and high extinction ratio to combine / split to two beams of light respectively at two channel wavelengths in O-band either in Transverse Magnetic (TM) mode or Transverse Electric (TE) mode. The Si-based Mux / Demux can be integrated within a silicon photonics system in either a transmission path or reception path, though other applications are possible.
[0023]Integrated wavelength-division multiplexer (Mux) or demultiplexer (Demux) is a key element for handling expansion of optical transmission through silicon photonics circuit. It is highly desirable to design ultra-compact, simple process, and low loss Mux / Demux based on widely su...
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A multiplexer / demultiplexer for at least two wavelengths in O-band. The multiplexer / demultiplexer includes a silicon waveguide block having a first port, a second / third port respectively in bar / cross position at an opposing end plane relative to the first port. The silicon waveguide block is configured to provide a general interference excitation of a light wave of a first wavelength and a second wavelength respectively selected from two windows in O-band. The light wave is either inputted via the first port and split into a first output light of the first wavelength out of the second port and a second output light of the second wavelength out of the third port, or is combined of a first input light of the first wavelength from the second port and a second input light of the second wavelength from the third port and outputted via the first port with both wavelengths.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is continuation of and claims priority to U.S. patent application Ser. No. 15 / 464,805, filed on Mar. 21, 2017, commonly assigned and incorporated by reference herein for all purposes.BACKGROUND OF THE INVENTION[0002]The present invention relates to a silicon photonics device. More particularly, the present invention provides a compact Si-based MMI Mux / Demux with low loss and high extinction ratio for two wavelengths in O-band.[0003]Over the last few decades, the use of broadband communication networks exploded. In the early days Internet, popular applications were limited to emails, bulletin board, and mostly informational and text-based web page surfing, and the amount of data transferred was usually relatively small. Today, Internet and mobile applications demand a huge amount of bandwidth for transferring photo, video, music, and other multimedia files. For example, a social network like Facebook processes more than 50...
Claims
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IPC IPC(8): G02B6/293G02B6/12
CPCG02B2006/12061G02B6/29397G02B6/29344G02B6/12007G02B6/2938
Inventor LIN, JIE
Owner MARVELL ASIA PTE LTD