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公开(公告)号：CA2229302A1
公开(公告)日：1998-08-14
申请号：CA2229302
申请日：1998-02-12
Applicant: CORNING INC , OPTICAL CORP OF AMERICA
Inventor： SCOBEY MICHAEL A , SPOCK DEREK E , GRASIS MICHAEL E , LAFRENIERE ROBERT W
Abstract: An optical multiplexing device demultiplexes collimated light from a fiber-optic source into separate individual wavelength sub-ranges or channels, and/or multip lexes separate channels to a common fiber-optic waveguide or other destination. An opt ical block defines an optical gap between two parallel surfaces having an optical por t on a first such parallel surface for passing the multi-channel collimated light into the optical gap. A channel port and at least one other reflective element, e.g., multiple ch annel ports arrayed in spaced relation to each other, are secured to the optical block at the parallel surfaces, providing an unobstructed, epoxy-free multi-point light path within the optical gap. At each channel port an interference filter secured to the opti cal block spans the optical gap. Each filter transmits a wavelength sub-range of the multi -channel collimated light passed by the optical port, and reflects other wavelengths. Thus, a wavelength sub-range of the multi-channel light passed through the optic al gap to a first channel port, which is in-band of that first channel port, is transmi tted through that first channel port. Light not transmitted through that first channel port i s reflected back through the optical gap, e.g., to strike a second channel port, at which a second, different wavelength sub-range is transmitted. The reflected optical signal thus cascades in a "multiple-bounce" sequence through the optical gap of the multiple xing device, sequentially adding and/or removing channels.
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公开(公告)号：WO9700459A3
公开(公告)日：1997-01-23
申请号：PCT/US9609740
申请日：1996-06-10
Applicant: OPTICAL CORP OF AMERICA
Inventor： SCOBEY MICHAEL A
CPC classification number: G02B6/29367 , G02B5/288 , G02B6/2938 , G02B26/001 , H01S5/4012 , H01S5/4025 , H04J14/02
Abstract: An optical multiplexing device spatially disburses collimated light from a fiber optic waveguide into individual wavelength bands, or multiplexes such individual wavelength bands to a common fiber optic waveguide or other destination. The optical multiplexing device has application for dense channel wavelength division multiplexing (WDM) systems for fiber optic telecommunications, as well as compact optical instrument design. Multiple wavelength light travelling in a fiber optic waveguide is separated into multiple narrow spectral bands directed to individual fiber optic carriers or detectors. An optical block (10) has an optical port for passing the aforesaid multiple wavelength collimated light, and multiple ports arrayed in spaced ralation to each other along a multiport surface of the optical block. A continuous, variable thickness, multi-cavity interference filter (22) extends on the multiport surface of the optical block over the aforesaid multiple ports. At each of the multiple ports the continuous interference filter transmits a different wavelength sub-range of the multiple wavelength collimated light passed by the optical port, and reflects other wavelengths. Multicolor light passed to the optical block from the optical port is directed to a first one of the multiple ports on an opposite surface of the optical block. The wavelength sub-range which is 'in-band' of such first one of the multiple ports (44...54) is transmitted through that port by the local portion of the continuous, variable thickness interference filter there, and all other wavelengths are reflected. The light not transmitted through the first port is reflected to strike a second port, at which a second (different) wavelength band is transmitted and all other light again reflected. The reflected optical signals (32) thus cascade in a 'multiple-bounce' sequence down the optical block of the multiplexing device, sequentially removing each channel of the multiplexed signal. In reverse operation, individual channels are combined in the optical block and transmitted through the optical port.
Abstract translation: 光学多路复用装置将从光纤波导的准直的光空间分散到单独的波长带中，或者将这样的各个波长带复用到公共光纤波导或其它目的地。 光复用器件具有用于光纤通信的密集信道波分复用（WDM）系统以及紧凑型光学仪器设计的应用。 在光纤波导中行进的多个波长光被分成指向各个光纤载体或检测器的多个窄光谱带。 光学块具有用于使上述多个波长准直光通过的光学端口，以及沿光学块的多端口表面彼此间隔开排列的多个端口。 连续的，可变厚度的多腔干涉滤光器在光学块的多端口表面上延伸超过上述多个端口。 在多个端口的每个端口处，连续干涉滤波器传输由光端口通过的多个波长准直光的不同波长子范围，并且反射其它波长。 从光学端口传递到光学块的多色光指向光学块的相对表面上的多个端口中的第一个。 多个端口中的第一个端口的“带内”的波长子范围通过该端口由连续的可变厚度干涉滤波器的局部部分传输，并且所有其它波长被反映。 不透过第一端口的光被反射以撞击第二端口，在该第二端口处传输第二（不同）波长带，并且所有其它光再次被反射。 因此，反射的光信号在多路复用装置的光块下以“多跳”序列级联，顺序地移除复用信号的每个信道。 在反向操作中，单个通道组合在光学块中并通过光学端口传输。
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公开(公告)号：CA2216793A1
公开(公告)日：1997-01-03
申请号：CA2216793
申请日：1996-06-10
Applicant: OPTICAL CORP OF AMERICA
Inventor： STUPIK PAUL , SCOBEY MICHAEL A
Abstract: An optical multiplexing device spatially disburses collimated light from a fiber optic waveguide into individual wavelength bands, or multiplexes such individual wavelength bands to a common fiber optic waveguide or other destination. The optical multiplexing device has application for dense channel wavelength division multiplexing (WDM) systems for fiber optic telecommunications, as well as compact optical instrument design. Multiple wavelength light traveling in a fiber optic waveguide is separated into multiple narrow spectral bands directed to individual fiber optic carriers or detectors. An optical block has an optical port for passing the afor esaid multiple wavelength collimated light, and multiple ports arrayed in spaced relation to each other along a multiport surface of the optical block. A continuous, variable thickness, multicavity interference filter (22) extends on the multiport surface (20) of the optical bl ock over the aforesaid multiple ports. At each of the multiple ports the continuous interference filter transmits a different sub-rang e of the multiple wavelength light passed by the optical port, and reflects other wavelengths. Multicolor light passed to the opt ical block from the optical port is directed to a first one of the multiple ports on an opposite surface of the optical block. The wavelengt h sub-range which is "in-band" of such first one of the multiple ports is transmitted through that port by the local portion of the cont inuous, variable thickness interference filter (22) there, and all other wavelengths are reflected. The light not transmitted through the first port (16) is reflected to strike a second port, at which a second (different) wavelength band is transmitted and all other light again re flected. The reflected optical signals thus cascades in a "multiple-bounce" sequence down the optical block (10) of the multiplexing devic e, sequentially removing each channel of the multiplexed signal. In reverse operation, individual channels are combined in the optical bl ock and transmitted through the optical port.
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公开(公告)号：AU2269597A
公开(公告)日：1997-09-02
申请号：AU2269597
申请日：1997-02-12
Applicant: OPTICAL CORP OF AMERICA
Inventor： SCOBEY MICHAEL A
IPC: G02B5/28 , H01S3/08 , H01S3/082 , H01S3/098 , H01S5/00 , H01S5/10 , H01S5/14 , H01S5/40 , H01S5/50 , H01S3/085
Abstract: An external cavity, single mode laser has a semiconductor gain medium, such as a diode laser, and a monolithic prism assembly positioned in an external resonant cavity having a length of 10 mm or less. The monolithic prism assembly includes a transparent substrate carrying a thin film Fabry-Perot interference filter on a face which is tilted to the path of travel of the laser light in the external cavity. Translation of the monolithic prism assembly including transversely to the optical axis provides continuous mode-hop-free tuning of the laser output wavelength. The Such optical devices can be economically mass produced in advantageously small size, having reproducible spectral performance properties held within tight tolerances. Significantly advantageous applications include dense wavelength division multiplexing systems requiring tightly spaced wavelength subranges for each of multiple channels. High wavelength stability against temperature and humidity changes, etc., can be achieved.
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公开(公告)号：JPH10339825A
公开(公告)日：1998-12-22
申请号：JP3326898
申请日：1998-02-16
Applicant: CORNING INC
Inventor： SCOBEY MICHAEL A , SPOCK DEREK E , GRASIS MICHAEL E , LAFRENIERE ROBERT W
Abstract: PROBLEM TO BE SOLVED: To obtain the device which has small polarization dependent loss in a light signal path and a small amount of an adhesive in the light signal path by allowing an optical port, a filter element and a reflecting element to cooperatively prescribed part of a multipoint zigzag optical path by passing through an optical gap. SOLUTION: The optical port, filter element and reflecting element cooperatively prescribe part of the multipoint zigzag optical path by passing through the optical gap. For example, the selective reflecting filter element of at least one of channel ports 18 and 42 is fixed to a reflecting element like an optical block 2 and a wide-band reflector extending to one optical gap of a parallel flank. A 2nd channel port and/or the selective reflecting filter element of the other reflecting element are fixed to an optical block 2 extending to the optical gap of the parallel flank on the opposite side. The multipoint zigzag optical path is established in an optical block 2 like this and extends to the front and rear through the gap between the two parallel flanks.
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Patent Agency Ranking
公开(公告)号：BR9813239A
公开(公告)日：2000-10-10
申请号：BR9813239
申请日：1998-12-10
Applicant: CORNING INC
Inventor： GRASIS MICHAEL EDWARD , SCOBEY MICHAEL A , SPOCK DEREK E , LAFRENIERE ROBERT W
Abstract: An optical multiplexing device is disclosed for multiplexing optical signals, for example, for a fiber-optic telecommunication system employing wavelength division multiplexing. The optical multiplexing device has a filter assembly defining a light path, preferably a multi-bounce zigzag expanded beam light path, from a common port at least to a first channel port and then a second channel port and then a pass-through port. The first channel port has a first optical filter element, for example, a multi-cavity interference filter, which is transparent to a wavelength sub-range within the wavelength range passed by the common port and the pass-through port, and substantially reflective of other wavelengths within such wavelength range. The second channel port includes a second optical filter element having light transmittance and reflectance properties substantially the same as those of the first optical filter element. The optical multiplexing device can be used to extract or drop a selected wavelength sub-range, most typically a single channel signal, from the multiplexed light, and to then inject a new signal into the multiplexed light at that same wavelength sub-range. In accordance with preferred embodiments, the optical multiplexing device serves as an add/drop filter arrangement to extract the signal of a particular channel and then immediately use the available channel by injecting a new signal at that same wavelength sub-range.
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公开(公告)号：AU7316098A
公开(公告)日：1999-01-07
申请号：AU7316098
申请日：1998-06-25
Applicant: CORNING INC
Inventor： GRASIS MICHAEL E , SCOBEY MICHAEL A , SPOCK DEREK E
Abstract: An optical multiplexing device is provided comprising multiple wavelength division multiplexers cascaded together. A first one of the wavelength division multiplexers has a common port and multiple optical ports which are optically coupled to the common port. The common port may be optically coupled to a trunk line of a system employing wavelength division multiplexing, for example, a fiber-optic telecommunication system employing 4, 8, 16 or other number of multiplexed channels. The optical ports include multiple channel ports, each of which is transparent to a corresponding wavelength sub-range and reflective of other wavelengths. The second wavelength division multiplexer has a common port optically coupled to one of the optical ports of the first wavelength division multiplexer. The second wavelength division multiplexer also has multiple optical ports which are optically coupled to its common port and include multiple wavelength-selective channel ports. A waveguide, such as a fiber-optic line, can optically connect the common port of the second wavelength division multiplexer to an optical port of the first wavelength division multiplexer. The cascaded WDMs each may be optically coupled to the output of a passive coupler and a housing may be provided defining an enclosed space in which the optical multiplexing device is mounted. Optionally, additional WDMs may be cascaded with the first two WDMs in a parallel or branched formation, an in-line formation or some combination. Preferably, the channels are interleaved, such that they are removed from the multiplexed signal in certain non-sequential order. The optical multiplexing device also may employ compound interleaving wherein adjacent channels are multiplexed by different ones of the cascaded WDMs. The optical multiplexing devices can operate to add signals, remove signals or a combination of both.
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公开(公告)号：AU5388898A
公开(公告)日：1998-08-20
申请号：AU5388898
申请日：1998-02-12
Applicant: CORNING INC
Inventor： SCOBEY MICHAEL A , SPOCK DEREK E , GRASIS MICHAEL E , LAFRENIERE ROBERT W
Abstract: An optical multiplexing device demultiplexes collimated light from a fiber-optic source into separate individual wavelength sub-ranges or channels, and/or multiplexes separate channels to a common fiber-optic waveguide or other destination. An optical block (2) defines an optical gap (10) between two parallel surfaces (12,14) having an optical port (18) on a first such parallel surface for passing the multi-channel collimated light into the optical gap (10). A channel port (18) and at least one other reflective element (20), e.g., multiple channel ports arrayed in spaced relation to each other, are secured to the optical block at the parallel surfaces, providing an unobstructed, epoxy-free multi-point light path within the optical gap. At each channel port an interference filter (32) secured to the optical block (2) spans the optical gap (10). Each filter transmits a wavelength sub-range of the multi-channel collimated light passed by the optical port, and reflects other wavelengths. Thus, a wavelength sub-range of the multi-channel light passed through the optical gap (10) to a first channel port, which is in-band of that first channel port, is transmitted through that first channel port. Light not transmitted through that first channel port is reflected back through the optical gap, e.g., to strike a second channel port, at which a second, different wavelength sub-range is transmitted. The reflected optical signal thus cascades in a "multiple-bounce" sequence through the optical gap of the multiplexing device, sequentially adding and/or removing channels.
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公开(公告)号：AU719757B2
公开(公告)日：2000-05-18
申请号：AU5388898
申请日：1998-02-12
Applicant: CORNING INC
Inventor： SCOBEY MICHAEL A , SPOCK DEREK E , GRASIS MICHAEL E , LAFRENIERE ROBERT W
Abstract: An optical multiplexing device demultiplexes collimated light from a fiber-optic source into separate individual wavelength sub-ranges or channels, and/or multiplexes separate channels to a common fiber-optic waveguide or other destination. An optical block (2) defines an optical gap (10) between two parallel surfaces (12,14) having an optical port (18) on a first such parallel surface for passing the multi-channel collimated light into the optical gap (10). A channel port (18) and at least one other reflective element (20), e.g., multiple channel ports arrayed in spaced relation to each other, are secured to the optical block at the parallel surfaces, providing an unobstructed, epoxy-free multi-point light path within the optical gap. At each channel port an interference filter (32) secured to the optical block (2) spans the optical gap (10). Each filter transmits a wavelength sub-range of the multi-channel collimated light passed by the optical port, and reflects other wavelengths. Thus, a wavelength sub-range of the multi-channel light passed through the optical gap (10) to a first channel port, which is in-band of that first channel port, is transmitted through that first channel port. Light not transmitted through that first channel port is reflected back through the optical gap, e.g., to strike a second channel port, at which a second, different wavelength sub-range is transmitted. The reflected optical signal thus cascades in a "multiple-bounce" sequence through the optical gap of the multiplexing device, sequentially adding and/or removing channels.
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公开(公告)号：BR9800612A
公开(公告)日：1999-10-05
申请号：BR9800612
申请日：1998-02-13
Applicant: CORNING INC
Inventor： SCOBEY MICHAEL A , SPOCK DEREK E , GRASIS MICHAEL E , LAFRENIERE ROBERT W
Abstract: An optical multiplexing device demultiplexes collimated light from a fiber-optic source into separate individual wavelength sub-ranges or channels, and/or multiplexes separate channels to a common fiber-optic waveguide or other destination. An optical block (2) defines an optical gap (10) between two parallel surfaces (12,14) having an optical port (18) on a first such parallel surface for passing the multi-channel collimated light into the optical gap (10). A channel port (18) and at least one other reflective element (20), e.g., multiple channel ports arrayed in spaced relation to each other, are secured to the optical block at the parallel surfaces, providing an unobstructed, epoxy-free multi-point light path within the optical gap. At each channel port an interference filter (32) secured to the optical block (2) spans the optical gap (10). Each filter transmits a wavelength sub-range of the multi-channel collimated light passed by the optical port, and reflects other wavelengths. Thus, a wavelength sub-range of the multi-channel light passed through the optical gap (10) to a first channel port, which is in-band of that first channel port, is transmitted through that first channel port. Light not transmitted through that first channel port is reflected back through the optical gap, e.g., to strike a second channel port, at which a second, different wavelength sub-range is transmitted. The reflected optical signal thus cascades in a "multiple-bounce" sequence through the optical gap of the multiplexing device, sequentially adding and/or removing channels.
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