Optical fiber polishing automation with on-line force sensing

Tseng, Yi-Ting; Hung, Tzu-Yu; Liu, Jui-Hung; Chang, Chung-Heng

doi:10.1016/j.ijmachtools.2006.08.004

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Tseng et al [3] developed an online force sensor to automatically control the wedge-shaped end-face of the optical fiber polishing process, as shown in Figure 1. The offset between the fiber cladding and the fiber core is less than 1.5 m.…”

Section: Determination Of the Initial Contact Pointmentioning

confidence: 99%

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A Study on the Effect of the Contact Point and the Contact Force of a Glass Fiber under End-Face Polishing Process

Tsai

Huang²,

Cheng³

et al. 2015

Advances in Materials Science and Engineering

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The offset between the center lines of the polished end-face and the fiber core has a significant effect on coupling efficiency. The initial contact point and the contact force are two of the most important parameters that induce the offset. This study proposes an image assistant method to find the initial contact point and a mathematical model to estimate the contact force when fabricating the double-variable-curvature end-face of single mode glass fiber. The repeatability of finding the initial contact point via the vision assistant program is 0.3 m. Based on the assumption of a large deflection, a mathematical model is developed to study the relationship between the contact force and the displacement of the lapping film. In order to verify the feasibility of the mathematical model, experiments, as well as DEFORM simulations, are carried out. The results show that the contact forces are alomst linearly proportional to the feed amounts of the lapping film and the errors are less than 9%. By using the method developed in this study, the offset between the grinding end-face and the center line of the fiber core is within 0.15 to 0.35 m.

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Section: Determination Of the Initial Contact Pointmentioning

confidence: 99%

“…One is the quality of the broken edge of the optical fiber [2], the second is the initial contact point between the optical fiber and the lapping film [3], and the third is the control of the contact force between the optical fiber and the lapping film [3,4].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Effect of the Contact Point and the Contact Force of a Glass Fiber under End-Face Polishing Process

Tsai

Huang²,

Cheng³

et al. 2015

Advances in Materials Science and Engineering

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show abstract

“…In 1981, Raibert and Craig [1] brought forward the hybrid movement-force control policy and provided the best way for a robot in free-form surfaces polishing. Under this policy, the compliant control is divided into two perpendicular spaces [2,3], the movement control space and the force control space, and both the movement control and the force control are taken in their own spaces in parallel independently and separately [4][5][6]. Subsequently, some research fellows [7][8][9] propose that the compliant control of the polishing tool can be regarded as the compromise of the complete displacement control and the complete force control, which is different from both the complete position control and the complete force control.…”

Section: Introductionmentioning

confidence: 99%

Study on the Fuzzy-PID Policy for Force Control in Free-Form Surfaces Polishing by Robots

Zhan

2011

AMM

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When a robot is used to polish or finish a curved surface, both feed movement and contact force have to be controlled at the same time so that the polishing tool would machine its work-piece at the right position in right posture with required force. In this paper, a passive wrist system is developed to adapt the shape of the machining curved surface by changing its posture along with the surface. And under the Fuzzy-PID policy, polishing force is controlled at a stable value in the normal direction of the named machining point while the polishing tool moving along the curved surface by multi-point machining. It means that the passive wrist system and the model of the surroundings could be used in force controlling when robots polish free-form surfaces with multi-point machining by a grinding ring.

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Microgrinding of lensed fibers by means of a scanning-probe microscope setup

Yakunin

Heitz

2009

Appl. Opt.

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We describe a precision grinding procedure that allows treating a previously etched fiber tip to conform to predefined shapes, including hemispherical and axial conical (axicon) lenses. The grinding method is based on mechanical polishing with the fiber tip moving in a translational mode inside a conical polishing surface. The grinding procedure is performed in a homemade scanning probe microscope equipped with a shear-force sensor based on a piezoelectric tuning fork as well as with capacitor position sensors. The scanning probe microscope is operated either as atomic force microscope for topographic characterization of the tip shape and the polishing surface or as a scanning near-field microscope for measurement of the light focusing properties of the ground microlenses.

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Optical fiber polishing automation with on-line force sensing

Cited by 5 publications

References 9 publications

A Study on the Effect of the Contact Point and the Contact Force of a Glass Fiber under End-Face Polishing Process

A Study on the Effect of the Contact Point and the Contact Force of a Glass Fiber under End-Face Polishing Process

Study on the Fuzzy-PID Policy for Force Control in Free-Form Surfaces Polishing by Robots

Microgrinding of lensed fibers by means of a scanning-probe microscope setup

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