Compact InP spot‐size converter with vertically tapered core layer formed by micro‐loading effect | Zendy

Ueda Y. | Zendy; Ogiso Y. | Zendy; Kashio N. | Zendy; Hashizume Y. | Zendy; Kikuchi N. | Zendy; Ishikawa M. | Zendy; Kohtoku M. | Zendy

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Compact InP spot‐size converter with vertically tapered core layer formed by micro‐loading effect

Author(s) -

Ueda Y.,

Ogiso Y.,

Kashio N.,

Hashizume Y.,

Kikuchi N.,

Ishikawa M.,

Kohtoku M.

Publication year - 2017

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2017.0711

Subject(s) - materials science , wafer , core (optical fiber) , coupling loss , waveguide , coupling (piping) , optics , layer (electronics) , facet (psychology) , optoelectronics , optical fiber , composite material , physics , psychology , social psychology , personality , big five personality traits

A compact (200 μm) spot‐size converter (SSC) with a vertically tapered core layer is developed, which is fabricated with a simple wafer process using the micro‐loading effect. It is confirmed that the vertical spot size of the SSC exceeded 2 μm, which was double that of the original waveguide. As a result, an InP waveguide integrated with the SSCs exhibited a coupling loss of <1 dB per facet for a lensed fibre with a 2.5 μm mode‐field diameter. The fluctuation in the total of coupling and excess losses of the SSC was <0.5 dB.

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