A novel soft-lithography based coupling structure for optical interconnection

Junhao Wu; Junfeng Bao; X. Wu

doi:10.1117/12.667012

28 January 2006 A novel soft-lithography based coupling structure for optical interconnection

Junhao Wu, Junfeng Bao, X. Wu

Author Affiliations +

Proceedings Volume 6025, ICO20: Optical Communication; 60250M (2006) https://doi.org/10.1117/12.667012
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

Optical interconnections on printed circuit board (PCB) holds the promise to meet an ever-increasing demand for inter-chip interconnect bandwidth, while the requirement of a stringent alignment between transmitter (normally VCSEL) and the waveguide on PCB exhibits one of obstacles that prohibit immediate implementation of optical interconnections. We demonstrate in this paper a soft lithography based coupling structure with a 0.5x0.5 mm pick-up window interfacing to VCSEL, along with a beam duct connecting to a regular waveguide. The coupling head, beam duct and the regular waveguide for chip-chip transmission were monolithically fabricated with UV-cured optical polymers through a single soft lithography process. The optical alignment was greatly eased by a factor of four comparing with conventional coupling approaches of straight waveguides. The coupling efficiency of the structure was compared with those of two prior schemes by utilizing ZEMAX, and change in transmitted pulse shape due to different beam path length was also analyzed. It was found that time delay as a result of an increased size of coupling structure was only in the order of 10-12 second, suitable for high speed communications in the range of 10Gb/s.

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Junhao Wu, Junfeng Bao, and X. Wu "A novel soft-lithography based coupling structure for optical interconnection", Proc. SPIE 6025, ICO20: Optical Communication, 60250M (28 January 2006); https://doi.org/10.1117/12.667012

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KEYWORDS

Waveguides

Vertical cavity surface emitting lasers

Optical interconnects

Polymers

Mirrors

Polymer multimode waveguides

Ray tracing

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