Packaging of photonic components VII: the process for coupling optical fibers to planar waveguides with thermal curing adhesives

Zhiyi Zhang; Gao Zhi Xiao; Ping Zhao; Jiaren Liu; Chander Prakash Grover

doi:10.1117/12.566801

20 December 2004 Packaging of photonic components VII: the process for coupling optical fibers to planar waveguides with thermal curing adhesives

Zhiyi Zhang, Gao Zhi Xiao, Ping Zhao, Jiaren Liu, Chander Prakash Grover

Author Affiliations +

Proceedings Volume 5577, Photonics North 2004: Optical Components and Devices; (2004) https://doi.org/10.1117/12.566801
Event: Photonics North, 2004, Ottawa, Ontario, Canada

Abstract

Our developed thermal curing adhesives were reported having excellent performance in coupling optical fibers to waveguides. The fiber-to-waveguide coupling process based on these adhesives is reported in this paper. The process consisted of three major steps in the process, including loading waveguide dies and fiber arrays onto the sample holders, aligning the fibers to waveguides at a constant temperature to reach minimum loss, bonding the fiber arrays to waveguide dies. The sample holders, which used ceramic spaces to isolate heat and springs to damp stress, were specially designed to keep fiber arrays and waveguide dies at a constant temperature up to 120°C with minimum shift. When the fiber arrays and waveguide dies were equilibrated with the set temperature, a rough alignment was conducted manually, followed by an automatic alignment controlled by a Melles Griot system. Then, the adhesives with proper viscosity and curing rate were applied to the gaps between fiber array and waveguide dies to bond them together. The curing temperature was optimized so that the adhesives could be distributed rapidly and cured at a speed that still allowed a small alignment adjustment during the curing. Such a temperature optimization was achieved by studying the adhesives’ curing kinetics with a DSC.

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Zhiyi Zhang, Gao Zhi Xiao, Ping Zhao, Jiaren Liu, and Chander Prakash Grover "Packaging of photonic components VII: the process for coupling optical fibers to planar waveguides with thermal curing adhesives", Proc. SPIE 5577, Photonics North 2004: Optical Components and Devices, (20 December 2004); https://doi.org/10.1117/12.566801

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KEYWORDS

Adhesives

Waveguides

Optical alignment

Fiber couplers

Optical fibers

Planar waveguides

Epoxies

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