公开(公告)号：US20030048976A1

公开(公告)日：2003-03-13

申请号：US09949597

申请日：2001-09-10

Applicant: Altitun AB

Inventor： Lennart P.O. Lundqvist

IPC: G02B006/12

CPC classification number: H01S5/0265 ,  G02F1/0147 ,  G02F2001/0157 ,  H01S5/0607

Abstract: An electro-absorption modulator is tunable along with the laser. Tuning the electro-absorption modulator permits optimum detuning to be maintained, even though the laser is tuned over several tens of nm. One approach to tuning the electro-absorption modulator is to heat the electro-absorption modulator. A semiconductor laser device includes a semiconductor laser positioned on a substrate. The semiconductor laser produces output light that is tunable over a tuning range between a first wavelength and a second wavelength. An electro-absorption modulator is disposed to modulate the light produced by the semiconductor laser. The operating temperature of the electro-absorption modulator is tunable so as to maintain constant detuning over at least a portion of the tuning range.

Abstract translation: 电吸收调制器与激光一起是可调谐的。 调谐电吸收调制器可以保证最佳的失谐，即使激光被调谐到几十nm。 调整电吸收调制器的一种方法是加热电吸收调制器。 半导体激光装置包括位于基板上的半导体激光器。 半导体激光器产生可在第一波长和第二波长之间的调谐范围内调节的输出光。 设置电吸收调制器以调制由半导体激光器产生的光。 电吸收调制器的工作温度是可调谐的，以便在调谐范围的至少一部分上保持恒定的失谐。

公开(公告)号：US20030048992A1

公开(公告)日：2003-03-13

申请号：US09949595

申请日：2001-09-10

Applicant: Altitun AB

Inventor： Lennart P.O. Lundqvist

IPC: G02B006/26 ,  G02B006/34 ,  G02F001/035

CPC classification number: G02F1/025 ,  G02B6/30 ,  G02B6/4204 ,  G02B2006/12107 ,  G02B2006/12142 ,  G02B2006/12147 ,  G02F2201/302 ,  H01S5/0265

Abstract: The output beam from a laser may be modulated using a coupled waveguide modulator that may be endfire coupled to the laser, or integrally formed on a common substrate with the laser, thereby providing a monolithic laser/modulator system that may manufactured using a high-volume semiconductor manufacturing process. The coupled waveguide modulator includes a substrate having a coupler region and an output region. A first waveguide on the substrate is parallel to an optical axis. A second waveguide is formed proximate the first waveguide, is parallel to the optical axis, and is separated from the first waveguide by a coupling distance in at least the coupler region. The second waveguide is nonparallel to the optical axis and separated from the first waveguide by at least the coupling distance in at least part of the output region.

Abstract translation: 可以使用耦合的波导调制器来调制来自激光器的输出光束，所述耦合波导调制器可以端激光耦合到激光器，或者与激光器一体地形成在公共基板上，从而提供可以使用高容量制造的单片激光/调制器系统 半导体制造工艺。 耦合波导调制器包括具有耦合器区域和输出区域的衬底。 基板上的第一波导与光轴平行。 在第一波导附近形成第二波导，平行于光轴，并且在至少耦合器区域中与第一波导分离耦合距离。 第二波导不平行于光轴并且在至少部分输出区域中至少与耦合距离与第一波导分开。