Optical component coupling using self-written waveguides

Hirose, Naohiro; Yoshimura, Tetsuzo; Ichiyoshi, Osamu

doi:10.1109/ecoc.2001.988856

Cited by 6 publications

(6 citation statements)

References 12 publications

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“…The regions, A to C are general loss variation tendency as reported before 11 . During core formation by UV input from two-faced MMF edges, the coupling loss drastically decreases (B) and reaches a constant value of 0.6 dB (C).…”

Section: Optical Fiber Coupling Using All-solid Type Self-written Wavsupporting

confidence: 54%

“…This kind of measurement method is very useful to evaluate kinetic behavior of coupling process. A detailed description of this measurement method is reported previously 11 . Figure 3 shows the photographs during the MMFs coupling process using self-written waveguide formation.…”

Section: Optical Fiber Coupling Loss Measurementmentioning

confidence: 99%

“…Exposing light from two-faced optical fibers would result in efficient coupling even if significant misalignment such as gap and offset exists between the fibers. We have already reported the effectiveness of this unique method on multimode fiber coupling under gap existence throughout some fundamental experiment [8][9][10][11][12][13] . In this paper, we report more detailed study on multi-mode fiber coupling.…”

Section: Introductionmentioning

confidence: 99%

“…We are investigating easy, convenient and accurate coupling methods for optical components using self-written waveguides [9][10][11][12][13] . Self-written waveguides (or light-induced/ self-organized waveguides) themselves have been studied extensively studied in other literture 1-8 because of their interesting formation mechanism.…”

Section: Introductionmentioning

confidence: 99%

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Optical component coupling using self-written waveguides

Hirose¹,

Ichiyoshi²

2003

SPIE Proceedings

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Optical component coupling using self-written waveguides is one of the promising methods to improve the existing alignment control difficulties in optical component coupling. Using conventional UV curable resin as a waveguide material, waveguide spontaneously forms by UV light exposure from an edge of an optical fiber. When UV light is exposed from two faced optical fiber edges, self-written waveguide forms and connect the two optical fibers with decreasing its coupling loss between them. As one interesting feature, optical coupling of the fibers can be attained even significant gap and offset would exist between the fibers. The observed coupling loss after waveguide formation is significantly lower than that before the waveguide formation. Another remarkable feature is that the coupling technique requires no edge treatment of the fibers to be coupled because of similarity of refractive indexes between UV resin and the fibers. Buffer-coated optical fibers are thus coupled using this technique simply after cutting by conventional scissors. The coupling using all solid type self-written waveguides, which have stabilized cladding material can also be achieved though further investigation is necessary to attain low loss waveguides materials. Using this interesting coupling method, conditions required for conventional optical couplings, such as severe alignment control and edge treatment would be significantly relaxed in a optical component coupling procedure.

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Section: Optical Fiber Coupling Using All-solid Type Self-written Wavsupporting

confidence: 54%

Section: Optical Fiber Coupling Loss Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optical component coupling using self-written waveguides

Hirose¹,

Ichiyoshi²

2003

SPIE Proceedings

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“…The formed waveguide shape can be controllable with the surroundings of a waveguide formation area 18, 91. Possibility of a spot size converter between different core size optical waveguides was also suggested [9] and primary studies of lateral misalignment and single mode fiber coupling have also been shown recently [lo]. This paper describes: 1.…”

Section: Introductionmentioning

confidence: 99%

Optical solder effects of self-written waveguides in optical circuit devices coupling

Hirose¹,

Ibaragi²

52nd Electronic Components and Technology Conference 2002. (Cat. No.02CH37345)

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Optical solder" effects of self-written waveguides are systematically studied throughout coupling experiment of conventional multi-mode optical fiber for communication use (core diameter = 50 pm). The waveguide easily connects two optical fibers under significant longitudinal and lateral misalignment. The results clearly show that the present coupling method is very effective. Under 1000 p longitudinal misalignment, the coupling loss significantly decreases after the waveguide formation even when lateral misalignment exists to some extent. With 30 pm lateral misalignment, the coupling loss is only 1 dB; 40 pm lateral misalignment still gives rather low loss value, 2 dB. The method is also successfully applied to connect two fibersWe are investigating easy, convenient and accurate coupling methods for optical components using self-written waveguides [8-lo]. A typical example of self-written waveguide, formed from conventional multi-mode optical fiber (MMF) is shown in Fig. 1. Various types of self-written waveguides have also been reported by several researchers [l-71. The mechanism is based on very fundamental principle of photosensitive medium, such as UV curable resin, under the condition that the refractive index increases after exposing the medium by light. When light is introduced from an optical fiber edge in the photosensitive medium, the light is guided in the exposed area due to the refractive index change. Thus, an optical waveguide is induced along light propagating axis and whose edges are non-cleaved (fractured). The coupling loss is fully comparable with that of cleaved fiber coupling. Though the refractive index similarity simply explains this interesting V-groove filled with unexposed resin MMF \ \Exposed resiy (self-written waveguide) phenomenon, the result can be regarded as another remarkable feature of this unique coupling method; i.e., very commonly required edge treatment of optical waveguides is not necessary for the optical coupling. Some analysis of all-solid type selfwritten waveguides is also described. 0-7803-7430-4/02/$17.00 02002 IEEE 268 2002 Electronic Components and Technology Conference

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Optical solder effects of self-written waveguides in optical circuit devices coupling

Hirose¹,

Ichiyoshi²

2001 Proceedings. 51st Electronic Components and Technology Conference (Cat. No.01CH37220)

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Optical component coupling using self-written waveguides

Abstract: The titled method is described with experiniental results of multi-mode fibre (MMF) coupling. Sey-written wuveguides successfully form in a gap between two MMFs; the coupling loss was about 0.6 dB for a 500 pn gup.

Cited by 6 publications

References 12 publications

Optical component coupling using self-written waveguides

Optical component coupling using self-written waveguides

Optical solder effects of self-written waveguides in optical circuit devices coupling

Optical solder effects of self-written waveguides in optical circuit devices coupling

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