公开(公告)号：EP1774628A4

公开(公告)日：2008-10-15

申请号：EP05767697

申请日：2005-06-30

申请人： FINISAR CORP

发明人： RATOWSKY RICHARD P ,  VERMA ASHISH K ,  FRANCIS DANIEL A

IPC分类号： H01S5/50

CPC分类号： H01S5/50 ,  B82Y20/00 ,  H01S5/2027 ,  H01S5/2231 ,  H01S5/227 ,  H01S5/3211 ,  H01S5/3216 ,  H01S5/34313 ,  H01S5/34366 ,  H01S5/4031 ,  H01S2301/173 ,  H01S2301/18

摘要： Systems and methods for extending a linear range of a semiconductor optical amplifier (SOA). A feedback layer is included in an SOA. The optical mode of the SOA is distributed between the feedback layer and the active region. As output optical power increases, the mode confinement of the active region increases and the mode is drawn from the feedback layer into the active region. The increase in the mode confinement offsets a loss of material gain such that the linear range of the SOA is extended. In one embodiment, the modal gain increases an higher output optical powers.

公开(公告)号：EP1551917A4

公开(公告)日：2008-01-23

申请号：EP03759696

申请日：2003-10-03

申请人： FINISAR CORP

发明人： DOUMA DARIN JAMES ,  STEWART JAMES WALTER ,  HOFMEISTER RUDY ,  HO ANTHONY W ,  HOSKING STEPHEN W

IPC分类号： C08L23/04 ,  C08L23/08 ,  H04B10/66

CPC分类号： H04B10/66

摘要： The method and apparatus for compensating a photo-detector allows both regulation and monitoring of the photo-detector to be performed with a common digital controller. The controller accepts input of monitored operational parameters including received signal strength and temperature. The controller provides as an output a bias control signal which regulates a positive the positive or negative side bias voltage power supply for the photo-detector. The controller maintains the bias voltage to the photo-detector at levels which optimize the gain and signal-to-noise ratios for the photo-detector thereby facilitating the decoding of the received signal over a broad range of signal strengths and temperatures. The controller includes a corresponding digital signal strength and temperature compensators the outputs of which summed with a summer to provide the bias control signal. The digital signal strength compensator also provides as an output a monitor signal a level of which corresponds to the actual signal strength received by the photo-detector after compensation for the variable gain of the photo-detector resulting from the bias voltage level. A transceiver as well as methods and means for monitoring a photo-detector are also disclosed.

公开(公告)号：EP1163751A4

公开(公告)日：2007-08-22

申请号：EP00992467

申请日：2000-09-27

申请人： FINISAR CORP

发明人： XIE PING

IPC分类号： H04J14/00 ,  G02B6/34 ,  H04B10/00 ,  H04J14/02

CPC分类号： G02B6/2938 ,  G02B6/29386 ,  H04J14/02

摘要： A method and apparatus for multiplexing/de-multiplexing optical signals is disclosed. The method and apparatus are applicable to a range of optical multiplexing techniques including, but not limited to: wavelength division multiplexing (WDM), dense wavelength division multiplexing (DWDM) and frequency division multiple accessing (FDMA). The disclosed devices do not require active components. The disclosed devices may be implemented with fiber or fiberless optical communication systems including telecommunications systems. The devices may be used on their own or as part of a larger system such as a multi-stage mux/demux, an optical switch, or router. In an embodiment of the invention, the devices are passively thermally stabilized with the result that their tuning is substantially invariant across a wide temperature range. The optical device includes a linear polarizer, wave plates and a beam displacer/combiner. The wave plates optically couple to the linear polarizer. The wave plates rotate both odd and even channel components of an optical beam between a linear and an orthogonal relationship depending on the propagation direction. Each wave plate is of a selected length and index of refraction which together determine a free spectral range which correspond to a spacing between adjacent gridlines of the selected wavelength grid. Each of the wave plates is tuned to even symmetry with the selected wavelength grid. The beam displacer/combiner displaces and combines orthogonally polarized odd and even channel components of an optical beam depending on a propagation direction.

摘要翻译： 公开了一种用于复用/解复用光学信号的方法和设备。 该方法和装置适用于一系列光复用技术，包括但不限于：波分复用（WDM），密集波分复用（DWDM）和频分多址（FDMA）。 所公开的设备不需要有源部件。 所公开的设备可以用包括电信系统的光纤或无光纤光通信系统来实现。 这些器件可以单独使用，也可以作为更大系统的一部分，例如多级多路复用器/解复用器，光开关或路由器。 在本发明的一个实施例中，器件被动热稳定，结果是它们的调谐在很宽的温度范围内基本不变。 该光学装置包括线性偏振器，波片和光束偏移器/组合器。 波片光学耦合到线偏振器。 波片根据传播方向在线性和正交关系之间旋转光束的奇数和偶数通道分量。 每个波片具有选定的长度和折射率，它们一起确定对应于所选波长栅格的相邻网格线之间的间隔的自由光谱范围。 每个波片被调谐到与所选波长网格均匀对称。 取决于传播方向，光束偏移器/组合器移位并组合光束的正交偏振的奇数和偶数通道分量。

公开(公告)号：EP1483816A4

公开(公告)日：2006-08-30

申请号：EP03707865

申请日：2003-02-11

申请人： FINISAR CORP

发明人： ROSENBERG PAUL K ,  GIARETTA GIORGIO ,  SCHIAFFINO STEFANO ,  STEWART JAMES ,  HOFMEISTER RUDOLF J

IPC分类号： H01L23/055 ,  H01S5/024 ,  H01S5/022 ,  H05K7/20

CPC分类号： H05K7/20445 ,  H01L2924/19107 ,  H01S5/02212 ,  H01S5/02415

摘要： A header assembly 700 including a base 702 and a platform 800 extending through the base 702 and substantially perpendicular thereto. The platform 800 includes conductive pathways 806 that connect electrical components on either side of the base 702, and the conductive pathways cooperate to form a connector 900 at the first end of the platform 800. A laser 1002 is mounted on top of a thermoelectric cooler 900 that is directly joined to the second end of the platform 800.The laser 1002 and thermoelectric cooler 900 are enclosed in a hermetic chamber cooperatively defined by the base 702, the platform 800, and a cap that is joined to the base 702. A photodiode 1004 optically coupled with the laser 1002 and a thermistor thermally coupled with the laser 1002 cooperate with the thermoelectric cooler 900 and a control circuit to facilitate control of the performance of the laser 1002.

公开(公告)号：EP1529360A4

公开(公告)日：2006-01-18

申请号：EP03767059

申请日：2003-07-31

申请人： FINISAR CORP

发明人： WEBER ANDREAS ,  GIARETTA GIORGIO ,  CASE DAN

IPC分类号： H04B10/152 ,  H04B10/155 ,  H04B10/08

CPC分类号： H04B10/504 ,  H04B10/40

摘要： An integrated post-amplifier and laser driver assembly is provided that is implemented as a single integrated circuit and includes a plurality of amplifiers (108, 110, 112 )or other control devices or circuits configured to implement various effects concerning data signals received and/or transmitted by a transceiver in conjunction with which the integrated post-amplifier and laser driver assembly is employed. A digital control interface (102) is included in the integrated post-amplifier and laser driver assembly and is configured to receive a control signal from an external digital controller. A glue logic module (103), and associated digital to analog controllers (104), of the integrated post-amplifier and laser driver assembly parse the control signal and generate and transmit corresponding analog signals to one or more of the amplifiers so as to implement processing of a data signal received from the optical receiver, as well as the control of data transmission by way of a suitable transmitter.

公开(公告)号：EP1485736A4

公开(公告)日：2006-01-11

申请号：EP03710985

申请日：2003-02-11

申请人： FINISAR CORP

发明人： CHIENG YEW-TAI ,  HSIEH JOHN ,  LIGHT GRETA L

IPC分类号： H01S5/06 ,  H01S5/062 ,  H01S5/068 ,  H01S5/40 ,  G02B6/12 ,  H04B10/00 ,  H04B10/04 ,  H04B10/155

CPC分类号： H01S5/06804 ,  H01S5/0617 ,  H01S5/06213 ,  H01S5/40

摘要： A method of maintaining desirable optical performance of an optoelectronic apparatus at extreme temperatures is disclosed. At a first temperature, a first bias current at which the laser generates optical signals at a first level is determined. At a second temperature outside of a predefined range of the first temperature, a second bias current at which the laser generates optical signals at a second level is determined. If the second temperature is greater than the higher end-point temperature of the predefined range, the second predefined level is defined to be less than the first predefined level. If the second temperature is less than the lower end-point temperature of the predefined range, the second predefined range is defined to be greater than the first predefined level.

公开(公告)号：EP1485739A4

公开(公告)日：2005-07-27

申请号：EP03707877

申请日：2003-02-14

申请人： FINISAR CORP

发明人： TOGAMI CHRIS ,  SASSER GARY ,  NG KAI

IPC分类号： G02B6/42 ,  G02B6/36

CPC分类号： G02B6/4277 ,  G02B6/4201 ,  G02B6/4245 ,  G02B6/4246 ,  G02B6/4256 ,  G02B6/428 ,  G02B6/4292 ,  H05K9/0058

摘要： An optical module has port housing (338) comprised of a material that does not substantially shield EMI, such as an optical plastic. The port housings have a receiving ferrule disposed in an aperture of an electrically conductive shell (318). The ferrule is movably coupled to the shell to permit it to respond to loads imposed by an optical fiber connector and includes an electrically conductive cap (325) to shield a portion of the port housing proximate the ferrule.

公开(公告)号：EP1247400A4

公开(公告)日：2005-06-22

申请号：EP00986341

申请日：2000-12-13

申请人： FINISAR CORP

发明人： LEVINSON FRANK H ,  SAGE GERALD F ,  LAWSON ARTHUR M ,  MOSTERT WILLEM A

IPC分类号： H04B10/00 ,  H04L13/08 ,  H04L29/14 ,  H04N7/173 ,  H04N7/22 ,  H04N21/61

CPC分类号： H04N21/615 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/6168

摘要： An optical signal return path system includes a transmitter (200) having a sample clock generator (212) for generating a sample clock (213) and an RF signal receiver (202-1) for receiving and converting an analog RF data signal into a first data stream of digitized RF data samples (Data-1) at a rate determined by the sample clock. Supplemental channel circuitry (202-2) provides a second data stream (Data-2). A multiplexor (204) receives and combines the first data stream (Data-1) and second data stream (Data-2), and an optical transmitter (206) converts the combined data stream into a serialized optical data signal for transmission over an optical fiber (210). The second data stream may contain maintenance data reflecting an operational state of the transmitter.