[ { "id": "authors:rrpe3-8tm39", "collection": "authors", "collection_id": "rrpe3-8tm39", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20191107-134832742", "type": "book_section", "title": "Holographic Filters", "book_title": "Photorefractive Materials and Their Applications 3", "author": [ { "family_name": "Buse", "given_name": "Karsten", "clpid": "Buse-K" }, { "family_name": "Havermeyer", "given_name": "Frank", "clpid": "Havermeyer-F" }, { "family_name": "Liu", "given_name": "Wenhai", "clpid": "Liu-Wenhai" }, { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "contributor": [ { "family_name": "G\u00fcnter", "given_name": "Peter", "clpid": "G\u00fcnter-P" }, { "family_name": "Huignard", "given_name": "Jean-Pierre", "clpid": "Huignard-J-P" } ], "abstract": "Fiber-optic networks are the backbone of Internet and telephone communication lines. Total internal reflection guides light in silica fibers. Low absorption makes transmission over 100 km without amplification possible in single-mode fibers. Distributed-feedback lasers with modulators put up to 10 and soon probably 40 Gbit/s onto a single wavelength. The signal is guided through the fiber, maybe repeated and amplified many times, until it reaches its destination.", "doi": "10.1007/978-0-387-34728-8_11", "isbn": "978-0-387-34443-0", "publisher": "Springer", "place_of_publication": "New York", "publication_date": "2007-08-29", "pages": "295-319" }, { "id": "authors:nm1wc-96b95", "collection": "authors", "collection_id": "nm1wc-96b95", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:HSIao06", "type": "article", "title": "Beam-width-dependent filtering properties of strong volume holographic gratings", "author": [ { "family_name": "Hsieh", "given_name": "Hung-Te", "clpid": "Hsieh-Hung-Te" }, { "family_name": "Liu", "given_name": "Wenhai", "clpid": "Liu-Wenhai" }, { "family_name": "Havermeyer", "given_name": "Frank", "clpid": "Havermeyer-F" }, { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "The finite dimension of the incident beam used to read out volume holographic gratings has interesting effects on their filtering properties. As the readout beam gets narrower, there is more deviation from the ideal response predicted for monochromatic plane waves. In this paper we experimentally explore beam-width-dependent phenomena such as wavelength selectivities, angular selectivities, and diffracted beam profiles. Volume gratings in both reflection and transmission geometries are investigated near 1550 nm. Numerical simulations utilizing the technique of Fourier decomposition provide a satisfactory explanation and confirm that the spread of spatial harmonics is the main contributing factor.", "issn": "0003-6935", "publisher": "Optical Society of America", "publication": "Applied Optics", "publication_date": "2006-06-01", "series_number": "16", "volume": "45", "issue": "16", "pages": "3774-3780" }, { "id": "authors:zcdf5-49827", "collection": "authors", "collection_id": "zcdf5-49827", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181219-102956173", "type": "book_section", "title": "Multi-notch holographic filters for atmospheric lines suppression", "book_title": "Optical Fabrication, Metrology, and Material Advancements for Telescopes", "author": [ { "family_name": "Blais-Ouellette", "given_name": "S\u00e9bastien", "clpid": "Blais-Ouellette-S" }, { "family_name": "Artigau", "given_name": "\u00c9tienne", "orcid": "0000-0003-3506-5667", "clpid": "Artigau-E" }, { "family_name": "Havermeyer", "given_name": "Frank", "clpid": "Havermeyer-F" }, { "family_name": "Matthews", "given_name": "Keith", "clpid": "Matthews-K" }, { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" }, { "family_name": "Steckman", "given_name": "Gregory J.", "clpid": "Steckman-G-J" } ], "contributor": [ { "family_name": "Atad-Ettedgui", "given_name": "Eli", "clpid": "Atad-Ettedgui-E" }, { "family_name": "Dierickx", "given_name": "Philippe", "clpid": "Dierickx-P" } ], "abstract": "Near-infrared emission from atmospheric OH radicals is known to severely affect astronomical observations. Until now, only complex dispersive instruments were partially capable of removing this unwanted background, which is composed of hundreds of narrow emission lines. Recent development in photosensitive glass and holographic recording technologies now allow the elaboration of filters with a large number of narrow reflecting bands well matched to OH lines. This technology shows promise for removing many tens of lines in the J, H, and K bands. That would result in a many fold increase in imaging and low resolution signal-to-noise ratio. Filters with 10 lines have been tested and show the appealing possibilities of these new devices.", "doi": "10.1117/12.552116", "isbn": "9780819454263", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_publication": "Bellingham, WA", "publication_date": "2004-09-24", "pages": "554-561" }, { "id": "authors:dzc1v-f0808", "collection": "authors", "collection_id": "dzc1v-f0808", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20170124-101017298", "type": "article", "title": "Volume holographic grating-based continuously tunable optical filter", "author": [ { "family_name": "Havermeyer", "given_name": "Frank", "clpid": "Havermeyer-F" }, { "family_name": "Liu", "given_name": "Wenhai", "clpid": "Liu-Wenhai" }, { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" }, { "family_name": "Steckman", "given_name": "Gregory J.", "clpid": "Steckman-G-J" } ], "abstract": "We propose and demonstrate a widely tunable optical filter, realized by angle tuning a volume holographic grating. The volume holographic grating selectively drops a narrow portion of the signal bandwidth into a fiber while passing through the rest of the signals. The demonstrated 1510- to 1590-nm tuning range covers the entire erbium-doped fiber amplifier (EDFA) C band, with small bandwidth variation and low insertion loss (<1 dB). Group delay, polarization-dependent loss, and polarization mode dispersion are measured and investigated for optimizing the filter characteristics.", "doi": "10.1117/1.1773775", "issn": "0091-3286", "publisher": "Society of Photo-Optical Instrumentation Engineers", "publication": "Optical Engineering", "publication_date": "2004-09", "series_number": "9", "volume": "43", "issue": "9", "pages": "2017-2021" }, { "id": "authors:qh02q-84v74", "collection": "authors", "collection_id": "qh02q-84v74", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:MOSol03", "type": "article", "title": "Folded shift multiplexing", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Liu", "given_name": "Wenhai", "clpid": "Liu-Wenhai" }, { "family_name": "Fainman", "given_name": "Yeshaiahu", "clpid": "Fainman-Yeshaiahu" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "Shift multiplexing is a holographic recording method that uses a spherical reference wave. We extend the principle to a thin slab of holographic material that acts as a waveguide. Total internal reflection folds the reference spherical beam in one dimension. We demonstrate that the shift selectivity with the folded spherical beam is independent of the slab thickness but depends instead on the numerical aperture of the coupled spherical wave. A shift selectivity of 0.5 \u00b5m has been achieved with a 1-mm-thick LiNbO3 crystal and 50 high-definition data pages are recorded with this method.", "issn": "0146-9592", "publisher": "Optical Society of America", "publication": "Optics Letters", "publication_date": "2003-06-01", "series_number": "11", "volume": "28", "issue": "11", "pages": "899-901" }, { "id": "authors:hv1vd-47574", "collection": "authors", "collection_id": "hv1vd-47574", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181213-143631949", "type": "book_section", "title": "Derivation and measurement of the M/# in spectral hole burning media", "book_title": "Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage", "author": [ { "family_name": "Liu", "given_name": "Zhiwen", "clpid": "Liu-Zhiwen" }, { "family_name": "Liu", "given_name": "Wenhai", "clpid": "Liu-Wenhai" }, { "family_name": "Moser", "given_name": "Christopher", "clpid": "Moser-C" }, { "family_name": "Zhang", "given_name": "David", "clpid": "Zhang-David-Yu" }, { "family_name": "Solomatine", "given_name": "Iouri V.", "clpid": "Solomatine-I-V" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" }, { "family_name": "Gorokhovsky", "given_name": "Anshel", "clpid": "Gorokhovsky-A-A" } ], "contributor": [ { "family_name": "Yin", "given_name": "Shizhou", "clpid": "Yin-Shizhou" }, { "family_name": "Yu", "given_name": "Francis T. S.", "clpid": "Yu-Francis-T-S" }, { "family_name": "Coufal", "given_name": "Hans J.", "clpid": "Coufal-H-J" } ], "abstract": "We demonstrate 10 plane wave holograms angularly multiplexed at one frequency channel in spectral hole burning medium. We show that the M/# is still a valid system metric and the measured M/# in one frequency channel is about 0.01.", "doi": "10.1117/12.454034", "isbn": "9780819441737", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_publication": "Bellingham, WA", "publication_date": "2002-01-23", "pages": "305-310" }, { "id": "authors:7dbrv-22976", "collection": "authors", "collection_id": "7dbrv-22976", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:MOSao01", "type": "article", "title": "Holographic memory with localized recording", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "We experimentally demonstrate and characterize a memory module that features selective page erasure and readout persistence using the localized recording method in doubly doped LiNbO3. Pages of information can be selectively erased without partially erasing the whole memory. Data pages can be written over erased pages multiple times. Information is read millions of times before refreshing is required. We quantify the optical quality of the holograms by measuring their signal-to-noise ratio for a memory size up to 100 holograms. A compact phase-conjugate readout architecture is also presented and experimentally demonstrated.", "issn": "0003-6935", "publisher": "Optical Society of America", "publication": "Applied Optics", "publication_date": "2001-08-10", "series_number": "23", "volume": "40", "issue": "23", "pages": "3909-3914" }, { "id": "authors:an655-c0d74", "collection": "authors", "collection_id": "an655-c0d74", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:MOSol00a", "type": "article", "title": "Diffraction efficiency of localized holograms in doubly doped LiNbO3 crystals", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Maravic", "given_name": "Irena", "clpid": "Maravic-I" }, { "family_name": "Schupp", "given_name": "Benjamin", "clpid": "Schupp-B" }, { "family_name": "Adibi", "given_name": "Ali", "clpid": "Adibi-A" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "The diffraction efficiency of M holograms superimposed in the volume of the recording medium is proportional to 1/M^2. We present a method, based on nondestructive localized holograms in a doubly doped LiNbO3 crystal, that allows us to also record M holograms in the same volume without an exposure schedule or a diffraction efficiency that has 1/M dependence. We compare experimentally the final diffraction efficiency obtained with the localized and distributed recording methods.", "issn": "0146-9592", "publisher": "Optics Letters", "publication": "Optics Letters", "publication_date": "2000-09-01", "series_number": "17", "volume": "25", "issue": "17", "pages": "1243-1245" }, { "id": "authors:xbz5h-0sc96", "collection": "authors", "collection_id": "xbz5h-0sc96", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190115-072747689", "type": "book_section", "title": "Localized holographic recording in doubly doped lithium niobate", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Schupp", "given_name": "Benjamin", "clpid": "Schupp-B" }, { "family_name": "Maravic", "given_name": "Irena", "clpid": "Maravic-I" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "contributor": [ { "family_name": "Lessard", "given_name": "Roger A.", "clpid": "Lessard-R-A" }, { "family_name": "Galstian", "given_name": "Tigran V.", "clpid": "Galstian-T-V" } ], "abstract": "In holographic data storage, pages of information are overlapped in the volume of the recording medium. Due to destructive read-out of holograms in photorefractive crystals such as LiNbO_3:Fe, holograms are recorded with an exposure schedule in order to equalize diffraction efficiency. This leads to a final diffraction efficiency proportional to 1/M^2, where M is the number of exposures. Coherent erasure of a particular page also erases all the other pages stored in the same volume. We believe to have found a technique that does not require an exposure schedule and that can record M holograms with diffraction efficiency following a 1/M dependence. Our technique is based on non-destructive read-out in doubly-doped LiNbO_3. The technique is based on the recording of localized holograms in thin layers across the volume of the crystal.", "doi": "10.1117/12.386813", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "publication_date": "2000-05-24" }, { "id": "authors:h2zvn-w5s84", "collection": "authors", "collection_id": "h2zvn-w5s84", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:MOSol00b", "type": "article", "title": "Localized holographic recording in doubly doped lithium niobate", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Schupp", "given_name": "Benjamin", "clpid": "Schupp-B" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "Persistent holograms are recorded locally with red light in a LiNbO>3 crystal doped with Mg and Fe. Selective erasure is realized by use of a focused UV sensitizing light. We demonstrate the recording of 50 localized images as well as selective erasure in a 4 mm \u00d7 4 mm \u00d7 4 mm crystal. A comparison of the total recording time for M holograms obtained with the conventional distributed-volume recording and the localized methods is presented.", "issn": "0146-9592", "publisher": "Optics Letters", "publication": "Optics Letters", "publication_date": "2000-02-01", "series_number": "3", "volume": "25", "issue": "3", "pages": "162-164" }, { "id": "authors:e315c-3fv81", "collection": "authors", "collection_id": "e315c-3fv81", "cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150513-123700283", "type": "book_section", "title": "3-D measurements using conoscopy and application to ophthalmology", "book_title": "9th European Signal Processing Conference", "author": [ { "family_name": "Moser", "given_name": "Christophe", "clpid": "Moser-C" }, { "family_name": "Barbastathis", "given_name": "George", "clpid": "Barbastathis-G" }, { "family_name": "Psaltis", "given_name": "Demetri", "clpid": "Psaltis-D" } ], "abstract": "In this paper we present a novel method to measure 3-D quasi planar or quasi spherical reflective surfaces with submicron depth accuracy. Two implementations are presented: a scanning and a non-scanning system. The non-scanning device allows fast measurements and can be applied for eye-shape measurements. The paper is organized as follows: in the introductory section, we first demonstrate the principle of the conoscopic effect leading to the formation of the interferogram. The second and third sections explain respectively. the scanning and non-scanning methods based on the conoscopic effect. We present the experimental results from a simple measurement and show how they conform with theory.", "isbn": "978-960-7620-06-4", "publisher": "IEEE", "place_of_publication": "Piscataway, NJ", "publication_date": "1998-09", "pages": "1-4" } ]