skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Optical add/drop filter for wavelength division multiplexed systems

Abstract

An optical add/drop filter for wavelength division multiplexed systems and construction methods are disclosed. The add/drop filter includes a first ferrule having a first pre-formed opening for receiving a first optical fiber; an interference filter oriented to pass a first set of wavelengths along the first optical fiber and reflect a second set of wavelengths; and, a second ferrule having a second pre-formed opening for receiving the second optical fiber, and the reflected second set of wavelengths. A method for constructing the optical add/drop filter consists of the steps of forming a first set of openings in a first ferrule; inserting a first set of optical fibers into the first set of openings; forming a first set of guide pin openings in the first ferrule; dividing the first ferrule into a first ferrule portion and a second ferrule portion; forming an interference filter on the first ferrule portion; inserting guide pins through the first set of guide pin openings in the first ferrule portion and second ferrule portion to passively align the first set of optical fibers; removing material such that light reflected from the interference filter from the first set of optical fibers is accessible; forming a second setmore » of openings in a second ferrule; inserting a second set of optical fibers into the second set of openings; and positioning the second ferrule with respect to the first ferrule such that the second set of optical fibers receive the light reflected from the interference filter.« less

Inventors:
 [1];  [2];  [3]
  1. (Pleasanton, CA)
  2. (Castro Valley, CA)
  3. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
874937
Patent Number(s):
6493484
Assignee:
The Regents of the University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
optical; adddrop; filter; wavelength; division; multiplexed; systems; construction; methods; disclosed; ferrule; pre-formed; receiving; fiber; interference; oriented; pass; set; wavelengths; reflect; reflected; method; constructing; consists; steps; forming; openings; inserting; fibers; guide; dividing; portion; pins; passively; align; removing; material; light; accessible; positioning; receive; optical fiber; interference filter; /385/

Citation Formats

Deri, Robert J., Strand, Oliver T., and Garrett, Henry E. Optical add/drop filter for wavelength division multiplexed systems. United States: N. p., 2002. Web.
Deri, Robert J., Strand, Oliver T., & Garrett, Henry E. Optical add/drop filter for wavelength division multiplexed systems. United States.
Deri, Robert J., Strand, Oliver T., and Garrett, Henry E. Tue . "Optical add/drop filter for wavelength division multiplexed systems". United States. https://www.osti.gov/servlets/purl/874937.
@article{osti_874937,
title = {Optical add/drop filter for wavelength division multiplexed systems},
author = {Deri, Robert J. and Strand, Oliver T. and Garrett, Henry E.},
abstractNote = {An optical add/drop filter for wavelength division multiplexed systems and construction methods are disclosed. The add/drop filter includes a first ferrule having a first pre-formed opening for receiving a first optical fiber; an interference filter oriented to pass a first set of wavelengths along the first optical fiber and reflect a second set of wavelengths; and, a second ferrule having a second pre-formed opening for receiving the second optical fiber, and the reflected second set of wavelengths. A method for constructing the optical add/drop filter consists of the steps of forming a first set of openings in a first ferrule; inserting a first set of optical fibers into the first set of openings; forming a first set of guide pin openings in the first ferrule; dividing the first ferrule into a first ferrule portion and a second ferrule portion; forming an interference filter on the first ferrule portion; inserting guide pins through the first set of guide pin openings in the first ferrule portion and second ferrule portion to passively align the first set of optical fibers; removing material such that light reflected from the interference filter from the first set of optical fibers is accessible; forming a second set of openings in a second ferrule; inserting a second set of optical fibers into the second set of openings; and positioning the second ferrule with respect to the first ferrule such that the second set of optical fibers receive the light reflected from the interference filter.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

Save / Share: