Abstract

A spatial-filtering technique is described which provides a means for launching an arbitrary mode on a fiber-optical waveguide. Appropriate amplitude and phase filters are used to discriminate against unwanted modes. These are inserted in the pupil of a launching lens which focuses collimated light onto the end of the guide. A double-path illuminating system is generally needed to obtain the required input polarization. The method is evaluated both theoretically and experimentally, and the agreement is found to be good within the practical limitations of cross-sectional irregularities in the nominally circular optical fibers.

© 1970 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Fiber Optics. XIII. Mode Detection and Discrimination in Optical Waveguides and Resonators*†‡

N. S. Kapany, J. J. Burke, and T. Sawatari
J. Opt. Soc. Am. 60(10) 1350-1358 (1970)

Scattering by an Arbitrary Configuration of Parallel Circular Cylinders

G. Oluremi Olaofe
J. Opt. Soc. Am. 60(9) 1233-1236 (1970)

Theory of the Prism–Film Coupler by Plane-Wave Analysis

R. Ulrich
J. Opt. Soc. Am. 60(10) 1337-1350 (1970)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (26)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription