Optical waveguides – With optical coupler – Input/output coupler
Patent
1994-05-16
1997-01-28
Bovernick, Rodney B.
Optical waveguides
With optical coupler
Input/output coupler
385123, G02B 632
Patent
active
055984932
ABSTRACT:
A method and system for forming microlens (78) on an optical fiber (60) include optical fiber lensing device (10) having lowering mechanism (18) for inserting optical fiber (60) at a predetermined and controlled speed to a predetermined depth in oil-acid bath having oil layer (62), acid layer (64), and boundary (68) between oil layer (62) and acid layer (64). The next step is to etch optical fiber (60) at boundary (68) by forming meniscus (66) around optical fiber (60) to selectively and controllably form on optical fiber (60) a microlens (78) having a predetermined shape, preferably a hyperbolic shape. The etching includes the steps of first tapering optical fiber (60) to a shape determined by the distance that optical fiber (60) is first inserted into acid layer (64). The etch step further chemically mills microlens (78) on optical fiber (60) to the predetermined shape by controlling the etch time and position of optical fiber (60) relative to boundary (68) for etching optical fiber (60) at boundary (68).
REFERENCES:
patent: 5200024 (1993-04-01), Blonder et al.
patent: 5394500 (1995-02-01), Marchman
patent: 5395741 (1995-03-01), Marchman
Bonham, Jr. Harry B.
Lucas, Jr. Richard E.
Alcatel Network Systems, Inc.
Bovernick Rodney B.
Wise Robert E.
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