| 主权项 |
1. An optical transmitting apparatus comprising:
a first laser emitting section that emits a first laser beam having a first wavelength; a second laser emitting section that emits a second laser beam having a second wavelength different from the first wavelength; a wavelength filter section that receives the first laser beam and the second laser beam, and emits a multiplexed beam obtained by multiplexing the first laser beam and the second laser beam; and an optical fiber coupled to the multiplexed beam and fixed in a fiber fixing section, wherein
the wavelength filter section comprises:
a prism that includes a front end face and a rear end face, facing each other, that receives the second laser beam on the front end face and receives the first laser beam on the rear end face, anda wavelength filter film that is located on the rear end face, that transmits the first laser beam that impinges on the rear end face, that reflects the second laser beam that impinges from the front end face, and that multiplexes the first laser beam and the second laser beam,the front end face and the rear end face are not parallel to each other so that a prism angle, which is an angle at which a surface parallel to the front end face intersects a surface parallel to the rear end face, is an acute angle, andthe prism angle is an angle at which the second laser beam, impinging from the front end face into the prism, is reflected by the wavelength filter film toward the front end face, and at which the multiplexed beam is directed to an optical axis side of the optical fiber. |
