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AssigneeOpnext Japan, Inc.
InventorsHiroaki Furuichi, Kazumi Kawamoto, Katsumi Kuroguchi, Atsuhiro Yamamoto, Keiichi Yamada, Tsutomu Okumura, Kazuo Takai, Shohei Hata
Estimating the term…
An optical module for use in detecting a plurality of different wavelengths by making use of the multiple wavelength selectivity of an etalon. The optical module includes a semiconductor laser, a lens for converting a beam emitted from the semiconductor laser into a substantially parallel beam, a beam splitter for splitting the converted beam into a reflected beam and a transmitted beam, and a light-receiving element disposed such that one of the split beams is incident thereupon through an etalon, wherein a center of the reflected beam from the etalon occurring as the beam is incident upon the etalon is arranged to return to a region other than a beam-emitting portion of the semiconductor laser.
An optical module comprising:
An optical module comprising:
An optical module in which a beam emitted from a semiconductor laser is converted into a substantially parallel beam by a lens, and is subsequently split into a reflected beam and a transmitted beam, one of the beams is incident upon a light-receiving element, and another one of the beams is incident upon another light-receiving element through an etalon,
An optical module comprising:
Dependencies are inferred from the claim text.