초록 ▼

The present invention provides a method (600) and device (200,500) for providing temperature-stable optical feedback for optical packages. The device includes an optical emitter (202,502), a first partially reflective optical element (204, 504), a second partially reflective optical element (206,506

The present invention provides a method (600) and device (200,500) for providing temperature-stable optical feedback for optical packages. The device includes an optical emitter (202,502), a first partially reflective optical element (204, 504), a second partially reflective optical element (206,506), a first optical sensing unit (208,508), a second optical sensing unit (210,510), and a feedback unit (212). The optical emitter (202,502) is responsive to an electrical input current and generates a beam of light (214). The first optical sensing unit (208,508) and the second optical sensing unit (210,510) receive diffracted portions of the beam of light (214) from the first partially reflective optical element (204, 504) and the second partially reflective optical element (206,506) respectively and generate a first feedback signal E1 and a second feedback signal E2. The feedback unit (212) utilizing the first feedback signal E1 and the second feedback signal E2 adjusts the electrical input current to the optical emitter (202,502).

대표청구항 ▼

[ We claim:] [1.] A device for an optical package for providing a temperature stable optical feedback, comprising:a) an optical emitter, responsive to an electrical input current, for generating a beam of light;b) a first partially reflective optical element, aligned on a common axis with the optica

[ We claim:] [1.] A device for an optical package for providing a temperature stable optical feedback, comprising:a) an optical emitter, responsive to an electrical input current, for generating a beam of light;b) a first partially reflective optical element, aligned on a common axis with the optical emitter and arranged to allow a first predetermined portion of the beam of light to exit the first partially reflective optical element and to diffract a second predetermined portion of the beam of light;c) a second partially reflective optical element, aligned on the common axis with the optical emitter and the first partially reflective optical element and arranged to receive the first predetermined portion of the beam of light and to allow a third predetermined portion of the beam of light to exit the second partially reflective optical element and to diffract a fourth predetermined portion of the beam of light;d) a first optical sensing unit, wherein the first optical sensing unit is arranged to receive the second predetermined portion of the beam of light, for generating a first electrical feedback signal to a feedback unit;e) a second optical sensing unit, wherein the second optical sensing unit is arranged to receive the fourth predetermined portion of the beam of light, for generating a second electrical feedback signal to the feedback unit; andf) the feedback unit, coupled to the first optical sensing unit and to the second optical sensing unit, for adjusting the electrical input current based on the first electrical feedback signal and the second electrical feedback signal.