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Related Experiment Video

Updated: Mar 18, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

4 channel × 10 Gb/s bidirectional optical subassembly using silicon optical bench with precise passive optical

Eun Kyu Kang, Yong Woo Lee, Sooraj Ravindran

|July 14, 2016

Summary

This study presents an advanced silicon optical bench for bidirectional optical subassemblies, enabling precise alignment of lasers and photodiodes to optical fibers for high-speed data transmission.

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Related Experiment Videos

Last Updated: Mar 18, 2026

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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Area of Science:

Photonics and Optical Engineering
Materials Science and Engineering
Electrical Engineering

Background:

Optical interconnects are crucial for high-speed data communication.
Current alignment methods can be complex and costly.
Need for passive alignment solutions in optical subassemblies.

Purpose of the Study:

To demonstrate an advanced silicon optical bench (SiOB) for a 4-channel bidirectional optical subassembly (BOSA).
To achieve precise, passive optical alignment of vertical-cavity surface-emitting lasers (VCSELs) and photodiodes (PDs) to multimode fibers (MMFs).
To reduce insertion loss for electrical data signals using integrated co-planar waveguide transmission lines.

Main Methods:

Fabrication of a SiOB with tapered fiber guiding holes (TFGHs) for passive fiber alignment.
Integration of VCSEL and PD arrays using flip-chip bonding onto co-planar waveguide (CPW) transmission lines.
Utilizing TFGHs for simple insertion and passive alignment of ribbon fibers.

Main Results:

Achieved high coupling efficiency between VCSELs, MMFs, and PDs.
Demonstrated excellent performance with clear open eye patterns at 10 Gb/s.
Recorded a very low bit error rate (< 10^-12) at 10 Gb/s with a 2³¹-1 PRBS pattern.

Conclusions:

The developed SiOB structure enables precise, passive alignment for optical interconnects.
The fabricated BOSA offers high performance and efficiency for high-speed data transmission.
This approach simplifies assembly and reduces the need for additional coupling optics.