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    7.
    发明专利
    未知

    公开(公告)号：AT538409T

    公开(公告)日：2012-01-15

    申请号：AT08779374

    申请日：2008-06-10

    Applicant: SYNTUNE AB

    Inventor： GRANESTRAND PER ,  WESSTROEM JAN-OLOF ,  ADAMS DAVE

    IPC: G02F1/225

    Abstract: A Mach Zehnder (MZ) modulator (1) includes a splitter (4) for splitting incident light in one wave guide (3) into two modulator arms (5,6) of the MZ and a combiner (7) that combines light from the two arms (5,6) into an output mode, where electrodes (9,10) are present in connection with the arms (5,6) for changing the refractive index in the arms in order to modulate incident light so that the light is amplified or so that an extinction, due to interference between the light in the two arms, takes place. The splitter (4) is arranged to split incident light equally into the two arms (5,6) and a part (11) of one of the arms (5) between the electrode (9) and the combiner (7) is designed to cause an intentional loss of light in the wave guide (5), whereby a desired asymmetry in transmission of the two arms (5,6) occurs.

    8.
    发明专利
    未知

    公开(公告)号：AT537472T

    公开(公告)日：2011-12-15

    申请号：AT06784209

    申请日：2006-08-16

    Applicant: SYNTUNE AB

    Inventor： WESSTROEM JAN-OLOF

    IPC: G02B5/18 ,  H01S5/00

    Abstract: Method for producing a modulated grating for an optimal reflection spectrum, which grating is a multiple wavelength reflector. The method includes the following steps: a) Determining wavelengths to be reflected b) Calculating a preliminary grating c) Comparing the reflection spectrum ro(f) with the characteristics of the wanted modulated grating d) Differences lead to a directional change of ro(f) e) Calculating a target function G(z) f) Changing the grating (zk) depending on the real and imaginary part of G(z) g) Repeating steps c) to f) until the grating reflects the predetermined wavelengths.

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