Lens structure for focusing the light emitted by a multimode fib

Details Lens structure for focusing the light emitted by a multimode fib Lens structure for focusing the light emitted by a multimode fib

1996-05-13

1997-12-16

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Input/output coupler

385 31, 385 34, 385 35, G02B 632

Patent

active

056994648

ABSTRACT:
Efficient coupling between multimode optical fibers and optical devices, such as optical detectors and light emitting diodes, is realized by means of a coupling arrangement comprising a length of homogeneous glass fiber, terminated by a convex microlens. One end of the glass, whose length is greater than the focal length of the microlens, is fusion-spliced to the multimode fiber. The convex microlens is formed at the other end of the homogeneous glass member.

REFERENCES:
patent: 4456330 (1984-06-01), Bliidaii
patent: 4784466 (1988-11-01), Khoe et al.
"Ideal Microlenses for Laser to Fiber Coupling" by C.A. Edwards et al., Journal of Lightwave Technology, vol. 11, No. 2, Feb. 1993, pp. 252-257.
"Intergration-Oriented lensed fibers having working distances and wide tolerances" by K. Shiraishi et al., OFC '96 Digest, pp. 245-246 vol. 2.
"Coupling of Spherical-surfaced LED and spherical-ended fiber" by O. Hasegawa et al., J. Appl. Phys., vol. 51, No. 1, pp. 30-36, Jan. 1980.

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