WO2001016637A1 - Module de photodiodes integre a selection de longueur d'onde - Google Patents

Module de photodiodes integre a selection de longueur d'onde Download PDF

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Publication number
WO2001016637A1
WO2001016637A1 PCT/US2000/040791 US0040791W WO0116637A1 WO 2001016637 A1 WO2001016637 A1 WO 2001016637A1 US 0040791 W US0040791 W US 0040791W WO 0116637 A1 WO0116637 A1 WO 0116637A1
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WO
WIPO (PCT)
Prior art keywords
optical
light
housing
filter
transducer
Prior art date
Application number
PCT/US2000/040791
Other languages
English (en)
Inventor
Alka G. Swanson
Mark A. Itzler
Massimo Diblasio
Original Assignee
Epitaxx, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Epitaxx, Inc. filed Critical Epitaxx, Inc.
Priority to AU12496/01A priority Critical patent/AU1249601A/en
Publication of WO2001016637A1 publication Critical patent/WO2001016637A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4249—Packages, e.g. shape, construction, internal or external details comprising arrays of active devices and fibres

Definitions

  • Embodiments of the present invention are directed to a method and apparatus for providing wavelength selectivity in a high speed optical communications network. More specifically, embodiments of the present invention are directed to an integrated wavelength selective photodiode module that combines multiple optical components into a single discrete package.
  • the plurality of services are delivered on a single information pipeline.
  • the plurality of services may include cable television services, pay per view data channels, access to a global communications network, and telephone services.
  • providing the plurality of services to an end user on a single pipeline requires that the pipeline have a tremendous amount of bandwidth. Therefore, instead of delivering the plurality of services electrically, high bandwidth optical fiber communication networks are often used to deliver the plurality of services.
  • EDFAs erbium-doped fiber amplifiers
  • EDFAs are optical fibers doped with the rare earth element erbium (er ⁇ 3 ) which can amplify light in the 1550 nanometer region when pumped by an external source. Erbium-doped fibers are a critical component in various applications requiring optical amplification near the 1550 nanometer wavelength region. This includes booster amplifiers for long-haul regenerated systems, power amplifiers for terrestrial and cable TV applications, and small-signal amplifiers in optical receivers. In general. EDFAs are used to boost optical signals thereby eliminating the need for efficient conversion of optical signals to electrical signals. EDFAs are particularly useful for long-haul communication, and access applications like video-to-home, virtual local area network services, and voice over the Internet.
  • erbium erbium
  • WDM wavelength division multiplexing
  • EDFAs have become an enabler for WDM systems and networks, and the use of WDM systems and networks has dramatically increased the capacity of optical fiber systems.
  • each service is assigned a particular wavelength or channel.
  • services SI, S2, S3, ..., Sn are each assigned a particular frequency ⁇ supervise ⁇ 2 , ⁇ 3 , . . ., ⁇ ⁇ and transmitted jointly along a single optical fiber transmission line.
  • the channels are generally separated by a frequency greater than or equal to about 200GHz. This is equivalent to a 1.6 nanometer channel separation.
  • the different services are differentiated by demultiplexing the wavelengths utilizing a combination of beam splitters, photodetectors and various bulky optical components.
  • L-band-EDFAs long wavelength band EDFAs
  • EDFFAs erbium doped fluoride fiber amplifiers
  • TDFAs thulium doped fiber amplifiers
  • PDFFAs praseodymium-doped fluoride fiber amplifiers
  • Raman amplifiers Raman amplifiers.
  • broadband operators have introduced a method of transmitting even more data on an optical fiber transmission line.
  • the method is called dense wavelength division multiplexing (DWDM).
  • DWDM dense wavelength division multiplexing
  • the wavelengths are generally separated by 50GHz or 0.4 nanometers. Therefore, in a DWDM system the channel separation is less than that for WDM thereby providing a capability of delivering even more services to an end user on a single fiber.
  • WDM dense wavelength division multiplexing
  • a Raman amplification system includes a continuous wave laser signal.
  • the laser signal is generally launched from a receiver end of an optical fiber and is referred to as a backward signal.
  • the backward signal is used to pump the optical fiber.
  • signal amplification is achieved.
  • amplification is caused by a nonlinear interaction that takes place at high powers. Because amplification is generally achieved when the signals overlap, the interaction results in the full transmission length of the fiber being turned into an amplifier.
  • the overall width of the band is determined by the gain or amplification spectrum. Thus, a larger gain translates into a greater bandwidth or an ability to provide more channels.
  • a practical limitation to bandwidth capacity is determined by the linewidth of the lasers being used.
  • wavelength discriminators or mechanisms for demultiplexing wavelengths at a receiver end typically comprise combinations of bulky fiber gratings, prisms or filters to separate the closely packed wavelengths.
  • a low cost, discrete, compact solution is required for both separating the closely packed wavelengths being transmitted at gigabit rates through an optical fiber communications network, and for separating pump wavelengths associated with boosting optical signals in erbium doped fibers and Raman amplifiers.
  • Embodiments of the present invention relate to an integrated wavelength selective photodiode module that combines multiple optical components into a single discrete package for use in a high speed optical communications network.
  • the present invention provides a low cost, discrete, compact solution for both separating closely packed wavelengths being transmitted at gigabit rates through an optical fiber communications network, and for separating pump wavelengths often associated with boosting optical signals in erbium doped fibers and Raman amplifiers.
  • the integrated wavelength selective photodiode module includes a fiber for transmitting an incoming optical beam, a lens combination for focusing the incoming optical beam, a filter for filtering undesirable wavelengths, and a photodiode for detecting predetermined wavelengths.
  • an embodiment of the invention features an apparatus for providing optical wavelength selectivity.
  • the apparatus includes a housing, an optical transmitter in connection with the housing that delivers a beam of light, a light focusing arrangement located inside said housing and in alignment with the optical transmitter, an optical detector that receives the beam of light from the focusing arrangement, and a filter that allows a predetermined range of optical wavelengths to pass through to the optical detector.
  • the optical detector may include an array of optical detectors wherein each optical detector operates at greater than or equal to approximately one Gigabit per second.
  • the array of optical detectors is made up of a plurality of independent optical detectors.
  • the optical detector includes a PIN photodiode made of a quaternary semiconducting material such as Indium-Gallium-Arsenide-Phosphide.
  • the PIN photodiode operates at a speed of approximately one Gigabit per second.
  • the optical transmitter includes an erbium doped fiber amplifier.
  • the optical transmitter includes a ribbon fiber having a plurality of fibers each transmitting a separate range of wavelengths.
  • the filter may include either a diffraction grating, or a prism.
  • the filter may include a grating in combination with an optical fiber.
  • the integrated wavelength selective photodiode module includes an apparatus for providing wavelength selectivity that utilizes a single miniaturized coaxial package that includes a housing that measures less than or equal to about twenty five millimeters; an optical transmission means that transmits a beam of light; a transducer that receives the beam of light; a light focusing arrangement that focuses the beam of light onto the transducer; and a filtering means that allows a predetermined range of optical wavelengths to pass through to the transducer.
  • the integrated wavelength selective photodiode module includes a method of providing wavelength selectivity for high speed optical transmissions, the steps of the method include receiving a beam of light; filtering the beam of light; focusing the beam of light onto a transducer; and utilizing a miniaturized discrete package that includes at least a filter for filtering the beam of light, and a high speed transducer that produces an electrical signal in response to the beam of light.
  • the integrated wavelength selective photodiode module includes an optical receiver assembly that includes a housing, and mounted inside said housing, an optical fiber that provides a light source, a lens focusing arrangement, an optical detector and a filter that allows a predetermined range of optical wavelengths to pass through to the optical detector.
  • a portion of the housing includes an index matching fluid.
  • the integrated wavelength selective photodiode module may be used to filter pump frequency wavelengths utilized in conjunction with an erbium doped fiber amplifier. In an alternative embodiment, the integrated wavelength selective photodiode module may be used in conjunction with a system that utilizes Raman amplification.
  • the present invention includes a method of manufacturing an optical spectrum analyzer.
  • the steps of the method include providing a housing able to receive a beam of light; providing a transducer that receives the beam of light within said housing; providing a focusing arrangement that directs the beam of light onto the transducer; and providing means for blocking while allowing a predetermined range of optical wavelengths to pass through to the transducer.
  • FIG. 1 is a cross-sectional view of an integrated wavelength selective photodiode module in accordance with one embodiment of the present invention
  • FIG. 2 is a schematic of an integrated wavelength selective photodiode module in accordance with one embodiment of the present invention utilizing a ribbon fiber
  • FIG. 3 is a schematic of a side view of an integrated wavelength selective photodiode module in accordance with one embodiment of the present invention utilizing a TO-46 diode package configuration
  • FIG. 4 is a schematic of an integrated wavelength selective photodiode module in accordance with one embodiment of the present invention utilizing a filter/grating combination;
  • FIG. 5 is a schematic of an integrated wavelength selective photodiode module in accordance with one embodiment the present invention wherein a filter and a lens are incorporated on a surface of a TO-46 diode package.
  • Embodiments of an integrated wavelength selective photodiode module in accordance with the present invention will now be described with reference to FIGS. 1-5.
  • embodiments of the present invention reduce the number of separate fiber optic components required, and provide discrete systems for separating closely packed wavelengths being transmitted at gigabit rates through an optical fiber communications network.
  • the integrated wavelength selective photodiode module 1 10 includes a housing 114 in which several components are mounted: an optical fiber 1 12 for transmitting an incoming optical beam 146, the optical fiber 1 12 includes a central core 152 and an end face 116.
  • the housing 114 further includes a lens 1 18 for focusing the incoming optical beam 146, a passband filter 122 for filtering predetermined wavelengths, and a photodiode 120 for detecting predetermined wavelengths.
  • the housing 1 14 includes a bore 142 and a cap 126 having a metal bushing.
  • the bore 142 passes through the cap 126.
  • the cap 126 holds the optical fiber 1 12 in place.
  • the optical fiber 1 12 is an erbium doped fiber amplifier (EDFA).
  • the optical fiber 1 12 includes a cleaved end face 1 16 having an optimized angle ( ⁇ ) that reduces back reflection of the incoming signal within the housing 1 14.
  • the end face 116 of the fiber 1 12 has an angle approximately equal to about eight degrees. As shown in FIG. 1, the angle ⁇ is measured relative to a flat end face 144 of the optical fiber 1 12.
  • the central core 152 of the optical fiber 1 12 is perpendicular to the flat end face 144.
  • the lens 1 18 is utilized.
  • the optical fiber 1 12 is aligned along an optical path defined by the central core region 152 of the optical fiber 1 12 with the lens 1 18 being located in that optical path.
  • the focusing lens 1 18 is placed at a distance of approximately one millimeter from the central core region 152 of the cleaved face 1 16 of the optical fiber 1 12, and at a distance of approximately one millimeter from the photodiode 120.
  • the focusing lens 1 18 and the end face 1 16 of the optical fiber 112 may be replaced with a spherically tipped fiber, or with a fiber having a convex or a concave shaped end face for focusing a beam of light.
  • the shaped end face simulates various types of lenses or lens combinations.
  • the lens 1 18 focuses the optical beam 146 onto a photodiode 120. However, before the optical beam 146 reaches the photodiode 120, the optical beam is directed through a passband filter 122.
  • the passband filter 122 is used to remove optical wavelengths having a frequency typically referred to as a "pump frequency".
  • the passband filter 122 is used to block pump frequencies having wavelengths that range from 1450nm to 1520nm, or from 970nm to 990nm, or both. However, optical signals with wavelengths ranging from 1530nm to 1560nm are allowed to pass through to the photodiode 120. When optical signals having the desired wavelengths are detected by the photodiode 120, a photocurrent is generated. The photocurrent may be collected by making contact to either a cathode 128 or an anode 132.
  • the integrated wavelength selective photodiode module 110 may also be used in a system that utilizes Raman amplification.
  • a Raman amplification system includes a continuous wave laser signal.
  • the laser signal is generally launched from a receiver end of an optical fiber and is referred to as a backward signal.
  • the backwards signal (typically a 1240nm optical signal referred to as a Raman pump wavelength) is used to pump the optical fiber.
  • the backward signal typically a 1240nm optical signal referred to as a Raman pump wavelength
  • signal amplification is achieved.
  • amplification is caused by a nonlinear interaction between a photon and a phonon, and gain is generally achieved when the signals overlap. The interaction results in the full transmission length of the fiber functioning as an amplifier.
  • a wavelength selective photodiode module 110 could be used to detect predetermined optical wavelengths while filtering any residual optical power at the Raman pump wavelengths.
  • the photodiode 120 is a PIN indium-gallium- arsenide-phosphide (InGaAsP) photodiode seated at a base of a well 138 of a ceramic submount 136.
  • the ceramic submount 136 is placed on a header 140 to which the cap 126 is also attached.
  • the ceramic submount 136 has a u-shaped configuration.
  • the ceramic submount 136 provides electrical connections and mechanical support for the photodiode 120 mounted at a base of the well 138.
  • the u-shaped ceramic submount 136 also provides mechanical support for the passband filter 122.
  • the passband filter 122 is mounted on two ridge like posts 150 of the u-shaped ceramic submount 136 and held in place by either a solder or an adhesive 148.
  • the passband filter 122 is a glass substrate that includes several layers of oxide.
  • the layers of oxide may include but are not limited to titanium oxide (TiO2) or silicon dioxide (SiO2).
  • the layers of oxide number greater than 50 and have a total thickness between 10-50 micrometers wherein each layer is approximately one quarter wavelength thick.
  • the passband filter 122 is mounted on an end face 116 of the optical fiber 1 12.
  • the passband filter 122 may be incorporated onto the end face 116 of the fiber utilizing a deposition procedure, or by fusing the passband filter 122 to the fiber 112.
  • the passband filter 122 is created from a semiconducting material designed to absorb predetermined wavelengths.
  • the PIN photodiode 120 may be replaced by an array of photodiodes each optimized for detecting particular wavelengths.
  • the PIN photodiode 120 may include an avalanche photodiode which provides substantial internal gain.
  • An avalanche PEN photodiode that meets the required criteria has been described in an article entitled “Planar Bulk-InP Avalanche Photodiode Design For 2.5 and lOGb/s Applications" by M. Itzler et al.; and in an article entitled “Manufacturable Planar Bulk-InP Avalanche Photodiodes For a 10 Gb/s Applications" by M. Itzler et al. Both articles are incorporated herein by reference.
  • an embodiment of the high speed photodiode 120 is commercially available in a packaged optical receiver module through EPITAXX, Inc of West Trenton, New Jersey a subsidiary of Nippon Sheet Glass Company, Limited of Tokyo, Japan.
  • the passband filter 122 is mounted inside a hermetically sealed cap 134.
  • the integrated wavelength selective photodiode module 110 is hermetically sealed to provide a robust optical design that minimizes environmental effects such as humidity, and dust which over a period of time would decrease spectral responsivity and overall system efficiencies.
  • the integrated wavelength selective photodiode module 110 utilizing the passband filter 122 provides a single discrete module for obtaining an improved spectral response and an electrical signal or photocurrent that relates only to a desired range of pass through frequencies. Furthermore, the overall size of the integrated wavelength selective photodiode module 110 is comparable in size to that of any off- the-shelf TO-46 diode package.
  • the integrated wavelength selective photodiode module 110 may be incorporated in a dual-in-line (DIL) package utilizing flat surface-mountable components.
  • DIL dual-in-line
  • the fiber 112, the lens 118, the filter 122, and the photodiode 120 are mounted on a flat surface in a box-shaped housing so that the relative positions and orientations of the components are maintained as shown in FIG. 1.
  • the optical fiber 112 may be a ribbon fiber 212 having a plurality of separate fibers 212a, 212b, 212c, and 212d as shown in FIG. 2.
  • Each fiber of the ribbon fiber 212 carries a different wavelength ⁇ ,, ⁇ 2 , ⁇ 3 , . . . , ⁇ n .
  • Each of the fibers 212a - 212d are aligned with a corresponding photodiode 120a - 120d.
  • Each of the photodiodes 120a - 120d is designed to detect a predetermined wavelength.
  • FIG. 3 is a schematic of a side view of an embodiment of the integrated wavelength selective photodiode module 1 10 incorporated within a TO-46 package configuration 510 with a fiber pigtail 516.
  • a base of the header 140 has a thickness that is approximately equal to about 4.2mm.
  • a horizontal diameter of the metal bushing cap 126 is approximately equal to about 5.55mm.
  • a length as measured from a base of the header 140 to a base of a cap 512 that holds a fiber sleeve 514 in place is approximately equal to about 19.05mm.
  • a length from a base of the cap 512 to an edge of the fiber sleeve 514 is approximately equal to about 360mm.
  • a length from the base of the cap 512 to an end of a fiber 112 is approximately equal to about 1.25 meters.
  • the fiber sleeve 514 holds a 250 micron diameter fiber in place and protects the fiber 1 12 from environmental effects while providing tensile strength to the fiber.
  • the fiber 1 12 could have a 900 micron diameter and include a tight buffered construction in which case the fiber sleeve 514 is unnecessary.
  • a diffraction grating 322 may be used to provide wavelength selectivity.
  • FIG. 4 shows an embodiment 310 of the present invention utilizing a diffraction grating/filter combination.
  • the diffraction grating 322 includes a periodic feature that occurs on a top surface of the glass substrate.
  • the diffraction grating may either be etched into the glass substrate, or deposited onto the glass substrate utilizing photolithography.
  • the diffraction grating varies periodically along a particular direction. Based upon that periodicity, the grating scatters light either away from a grating surface or couples light through the grating.
  • the periodicity of the diffraction grating 322 is generally represented by the equation ⁇
  • n represents the index of refraction
  • ⁇ represents a diffracted wavelength
  • ⁇ represents the angle of reflection of the optical beam as measured from a line orthogonal to a surface of the diffraction grating
  • ⁇ represents the grating periodicity.
  • a diffraction grating may be produced in a manner that diffracts a predetermined wavelength ⁇ (or range of wavelengths) and allows other wavelengths to pass through undeviated. Accordingly, the grating could be used to diffract the pump frequencies while allowing optical signals having wavelengths from 1530nm to 1570nm (or some other range of desired wavelengths) to pass through to the photodiode 120.
  • the diffraction grating could be used to diffract predetermined wavelengths 146' towards an array of optical detectors.
  • the array of optical detectors are made up of a plurality of independent optical detectors 120.
  • Each of the plurality of independent detectors 120 may be used to detect either a specific wavelength or range of wavelengths.
  • wavelengths ⁇ ,, ⁇ 2 , . . . , ⁇ n would only be detected by a corresponding detector D,, D 2 , . . . , D n .
  • each detector would be located at a predetermined angle from the grating associated with a particular wavelength. As a result, high speed independent channel tracking could be provided.
  • independent channel tracking could similarly be achieved by utilizing a prism.
  • the filter/grating combination may be included on either a cleaved or polished endface of the optical fiber 1 12.
  • the filter/grating combination could have spatially varying transmission properties such that only selected wavelengths are passed through a particular section of the filter to an array of photodiodes 120 located directly beneath the filter/grating.
  • the passband filter 122 may be incorporated on the lens 118.
  • the combination may be held in place utilizing a top surface 412 of the cap 126 as shown in FIG. 5.
  • a passband filter 122 and lens 1 18 combination are incorporated directly into a TO-46 package.
  • the photodiode 120 is shown mounted on a stage 414 having electrical connections to an anode 128. a cathode 132 and a grounding lead 130.
  • the photodiode 120 is a high speed avalanche photodiode optimized to function at greater than or equal to approximately one Gigabit per second. Therefore, the integrated wavelength selective photodiode module 1 10 may be used to demultiplex closely packed wavelengths being transmitted in a high speed optical communications network that utilizes wavelength division multiplexing (WDM) or dense wave division multiplexing (DWDM).
  • WDM wavelength division multiplexing
  • DWDM dense wave division multiplexing
  • an integrated wavelength selective photodiode module 1 10. a fiber 1 12 for transmitting an incoming optical beam 146, a lens 1 18 for focusing the incoming optical beam 146, a passband filter 122 for filtering undesirable wavelengths, and a photodiode 120 for detecting predetermined wavelengths has been combined into a miniaturized discrete package.
  • the overall size of the integrated wavelength selective photodiode module 1 10 is comparable to that of an off-the-shelf TO-46 diode package having a fiber pigtail.
  • the system provides a robust optical design that minimizes environmental effects which over a period of time will provide a stable spectral sensitivity and improved overall device efficiencies.
  • the integrated wavelength selective photodiode module 110 has been described for use in a high speed optical network, the integrated wavelength selective photodiode module may be utilized in a continuos wave arrangement with operating speeds well below a Gigahertz.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un appareil destiné à fournir une sélectivité de longueur d'onde optique qui comporte un logement; un émetteur optique relié au logement qui émet un faisceau lumineux; un dispositif de focalisation de la lumière placé à l'intérieur du logement et aligné avec l'émetteur optique; un détecteur optique qui reçoit le faisceau lumineux provenant du dispositif de focalisation; et un filtre qui permet à une gamme prédéterminée de longueurs d'ondes optiques de traverser le détecteur optique. L'appareil combine plusieurs composants optiques en un conditionnement discret simple susceptible de servir dans un réseau de communications optiques de grande vitesse (Gigabit).
PCT/US2000/040791 1999-08-31 2000-08-30 Module de photodiodes integre a selection de longueur d'onde WO2001016637A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU12496/01A AU1249601A (en) 1999-08-31 2000-08-30 Integrated wavelength selective photodiode module

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38698399A 1999-08-31 1999-08-31
US09/386,983 1999-08-31

Publications (1)

Publication Number Publication Date
WO2001016637A1 true WO2001016637A1 (fr) 2001-03-08

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127340A1 (de) * 2001-06-06 2003-02-06 Infineon Technologies Ag Vorrichtung für die optische Datenübertragung
WO2003012531A1 (fr) * 2001-08-02 2003-02-13 Aegis Semiconductor Instruments optiques accordables
WO2003046630A1 (fr) * 2001-11-28 2003-06-05 Aegis Semiconductor, Inc. Emballage destine des composants electro-optiques
WO2004020961A1 (fr) * 2002-09-02 2004-03-11 Qinetiq Limited Encapsulation hermetique
US7221827B2 (en) 2003-09-08 2007-05-22 Aegis Semiconductor, Inc. Tunable dispersion compensator
WO2013189075A1 (fr) * 2012-06-21 2013-12-27 华为技术有限公司 Filtre optique accordable, ensemble optique accordable et système de réseau optique passif à multiples longueurs d'onde
JP2014149465A (ja) * 2013-02-02 2014-08-21 Konica Minolta Inc 光学部品及びこれを備える光学装置

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US5291571A (en) * 1992-03-19 1994-03-01 Fujitsu Limited Duplicated light source module
US5566265A (en) * 1993-12-22 1996-10-15 Siemens Aktiengesellschaft Transmission and reception module for a bidirectional, optical message and signal transmission
US5646399A (en) * 1995-08-28 1997-07-08 Fujitsu Limited Tunable optical filter having beam splitter and movable film filter
EP0901170A1 (fr) * 1997-09-03 1999-03-10 Sumitomo Electric Industries, Ltd. Photodiode à détection sélective de longueurs d'onde et module comprenant cette photodiode

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US4767171A (en) * 1986-03-27 1988-08-30 Siemens Aktiengesellschaft Transmission and reception module for a bidirectional communication network
US5291571A (en) * 1992-03-19 1994-03-01 Fujitsu Limited Duplicated light source module
US5566265A (en) * 1993-12-22 1996-10-15 Siemens Aktiengesellschaft Transmission and reception module for a bidirectional, optical message and signal transmission
US5646399A (en) * 1995-08-28 1997-07-08 Fujitsu Limited Tunable optical filter having beam splitter and movable film filter
EP0901170A1 (fr) * 1997-09-03 1999-03-10 Sumitomo Electric Industries, Ltd. Photodiode à détection sélective de longueurs d'onde et module comprenant cette photodiode

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127340A1 (de) * 2001-06-06 2003-02-06 Infineon Technologies Ag Vorrichtung für die optische Datenübertragung
CN100354699C (zh) * 2001-08-02 2007-12-12 伊吉斯半导体公司 可调谐光学仪器
WO2003012531A1 (fr) * 2001-08-02 2003-02-13 Aegis Semiconductor Instruments optiques accordables
US7002697B2 (en) 2001-08-02 2006-02-21 Aegis Semiconductor, Inc. Tunable optical instruments
WO2003046630A1 (fr) * 2001-11-28 2003-06-05 Aegis Semiconductor, Inc. Emballage destine des composants electro-optiques
US6985281B2 (en) 2001-11-28 2006-01-10 Aegis Semiconductor, Inc. Package for optical components
CN100445788C (zh) * 2001-11-28 2008-12-24 伊吉斯半导体公司 用于光电元件的封装
WO2004020961A1 (fr) * 2002-09-02 2004-03-11 Qinetiq Limited Encapsulation hermetique
US7348203B2 (en) 2002-09-02 2008-03-25 Qinetiq Limited Hermetic packaging
US7221827B2 (en) 2003-09-08 2007-05-22 Aegis Semiconductor, Inc. Tunable dispersion compensator
WO2013189075A1 (fr) * 2012-06-21 2013-12-27 华为技术有限公司 Filtre optique accordable, ensemble optique accordable et système de réseau optique passif à multiples longueurs d'onde
US9436021B2 (en) 2012-06-21 2016-09-06 Huawei Technologies Co., Ltd. Tunable optical filter, tunable optical component, and multi-wavelength passive optical network system
JP2014149465A (ja) * 2013-02-02 2014-08-21 Konica Minolta Inc 光学部品及びこれを備える光学装置

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