Self-Aligning Optical Interconnect Scheme Using Put-in Microconnector (Special Issue On Devices, Packaging Technology, and Subsystems for the Optical Access Network)

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We introduce a new type of optical microconnector named "put-in microconnector-II" using a planar microlens. The connector part is composed by a lens jack and fiber plug, where the lens jack is a hollow formed on a planar microlens surface, and the fiber plug is a protuberance formed on the core of an optical fiber. This concept can realize an alignment-free single mode fiber coupling. In this paper, we describe the structure and fabrication process, the optical coupling characteristics of the fabricated device, and finally, the basic analysis of optical coupling module. For the optical coupling characteristics, we measured the coupling loss and the return loss. The optical coupling loss of about 4dB and the return loss of about 49dB were obtained at wavelength of λ=0.633μm. Moreover, we have confirmed that the insertion loss of such a structure does not increase so much in comparison with that of the butt jointing. For the purpose of characterizing the optical property, the theoretical analysis was performed. We have made a software tool to estimate the optical coupling loss due to the position error. For this type of structure, the tolerance of about 15μm for the distance between the laser and the planar microlens and 150μm for the distance between the planar microlens and the optical fiber were estimated. Since the put-in microconnector does not require any precise alignment, it is appropriate for mass production.
社団法人電子情報通信学会の論文
1997-01-25

Self-Aligning Optical Interconnect Scheme Using Put-in Microconnector (Special Issue On Devices, Packaging Technology, and Subsystems for the Optical Access Network)

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