Optical transmitter apparatus
AssigneeSumitomo Electric Device Innovations, Inc.
InventorsShuichi Kubota, Motoki Saji
Life of this patent
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Abstract
A multi-lane optical apparatus is disclosed. The optical apparatus includes monitor photodiodes (mPD) whose number corresponds to a number of lanes. The mPDs are arranged in an array so as to intersect optical axes of the respective lanes. The mPD has a light-sensitive area and an electrode that are arranged on a diagonal connecting two corners. The light-sensitive area is disposed offset from the center of the mPD. The mPDs in outermost are disposed such that the respective electrodes face inward.
Claims8
An optical transmitter apparatus capable of transmitting a number of optical signals each having a wavelength specific thereto and different from each other, the optical transmitter apparatus comprising:
- a number of optical modules each generating the optical signals and having respective optical axes;
- a number of photodiodes (PDs) each sensing power of the optical signals, the PDs each having a light-sensitive area and a first electrode electrically connected with the light-sensitive area, the PDs each having a rectangular plane shape with a diagonal, the light-sensitive area and the first electrode being arranged on the diagonal of the rectangular plane shape;
- a carrier that mounts the PDs thereon, the PDs being arranged in an array on the carrier that intersects the optical axes;
- and
- a housing that has sides forming a space that encloses the optical modules, the PDs, and the carrier therein,
- wherein the PDs disposed outermost on the carrier face the first electrodes thereof toward the PDs disposed inward on the carrier.
Dependencies are inferred from the claim text.