Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Derwyn C. Johnson"'
Control of wavelength selectivity of power transfer in fused biconical monomode directional couplers
Autor:
Derwyn C. Johnson, Kenneth O. Hill
Publikováno v:
Applied optics. 25(21)
Variation du taux de couplage avec la longueur d'onde de ces dispositifs qui sont utilises pour le multiplexage de longueurs d'ondes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8306c442eeb2d14164b13179805c95c
https://pubmed.ncbi.nlm.nih.gov/20454019
https://pubmed.ncbi.nlm.nih.gov/20454019
Publikováno v:
Applied optics. 25(3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b72ec01586b66c977494b58c72734fc
https://pubmed.ncbi.nlm.nih.gov/20445687
https://pubmed.ncbi.nlm.nih.gov/20445687
Publikováno v:
Applied optics. 16(5)
The frequency spectrum of a continuous wave fiber-optic Raman laser is measured and observed to consist of several discrete lines covering a 3-nm spectral range. The output of the laser also contains damped transients which are attributed to strong p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc6eefafaf6a424cb9342d2754a77d70
https://pubmed.ncbi.nlm.nih.gov/20168682
https://pubmed.ncbi.nlm.nih.gov/20168682
Publikováno v:
Applied optics. 16(7)
The low loss access coupler includes two multimode optic fibers, each having a biconical taper section. The biconical taper sections of the fibers are fused together to provide optical coupling between the fibers. The fused fibers may also be twisted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f267c49ce241b1ccdcd157b18d9ea9f
https://pubmed.ncbi.nlm.nih.gov/20168806
https://pubmed.ncbi.nlm.nih.gov/20168806
Autor:
G. Kajrys, Bernard Y. Malo, Jacques Albert, Derwyn C. Johnson, Kenneth O. Hill, Francois Bilodeau, John L. Brebner
Publikováno v:
Optics letters. 18(14)
The optical absorption spectrum of ion-implanted silica is shown to become dichroic when it is photobleached with polarized 248-nm light. The dichroism is modeled by a photobleaching process that bleaches color centers preferentially depending on the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ec3bd86abb3992065cf009c17f642a9d
https://pubmed.ncbi.nlm.nih.gov/19823309
https://pubmed.ncbi.nlm.nih.gov/19823309
Autor:
Kenneth O. Hill, Derwyn C. Johnson, Peter G. Wigley, Bernard Y. Malo, Francois Bilodeau, George I. Stegeman
Publikováno v:
Optics letters. 17(22)
Using fiber photosensitivity, we have made efficient, application-specific rocking filters from conventional monomode telecommunications optical fiber. Filters with a length of 10.89 m, a bandwidth of 58 nm, and a transmission of 99% at the resonant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19b9b07fceebcb03d78c557122df3da5
https://pubmed.ncbi.nlm.nih.gov/19798270
https://pubmed.ncbi.nlm.nih.gov/19798270
Autor:
Jacques Albert, Bernard Y. Malo, John L. Brebner, Derwyn C. Johnson, Richard Leonelli, Kenneth O. Hill
Publikováno v:
Optics letters. 17(23)
The changes in refractive index, optical absorption, and volume of synthetic fused silica resulting from the implantation of germanium and silicon ions at energies of 3 and 5 MeV are reported. Implantation changes the density and generates ultraviole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::058283e9aa0083ed2ceb9f53bd993b0d
https://pubmed.ncbi.nlm.nih.gov/19798273
https://pubmed.ncbi.nlm.nih.gov/19798273
Autor:
Francois Bilodeau, Bernard Y. Malo, Kenneth O. Hill, K. A. Vineberg, Jacques Albert, Derwyn C. Johnson
Publikováno v:
Optics letters. 15(17)
A novel technique is reported for detecting permanent and transient light-induced refractive-index changes (photosensitivity) in optical fibers. The index change is detected by irradiating one arm of an unbalanced Mach-Zehnder fiber interferometer wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca920925adaeb7e9da185ac1efe61522
https://pubmed.ncbi.nlm.nih.gov/19770963
https://pubmed.ncbi.nlm.nih.gov/19770963
Publikováno v:
Optics letters. 3(2)
The formation and characterization of narrow-band-waveguide reflection filters in Ge-doped silica optical fibers is described. The filters can have complex response profiles and are tunable in frequency by mechanical strain.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32de3a91712a6a88ba8d7058ce08710f
https://pubmed.ncbi.nlm.nih.gov/19684698
https://pubmed.ncbi.nlm.nih.gov/19684698
Publikováno v:
Optics letters. 1(3)
Full duplex transmission of television signals over a single optical fiber is demonstrated. The transmission link uses directional couplers that possess high directivity and low insertion loss.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b8b020db13d59e75e7f79abe46028c1
https://pubmed.ncbi.nlm.nih.gov/19680346
https://pubmed.ncbi.nlm.nih.gov/19680346