| 摘要 |
A filter and manufacturing method thereof, and a laser wavelength monitoring device, the filter comprising: two translucent bodies, each having a first plane, a second plane forming a wedge angle with the first plane, and a third plane intersecting with both the first plane and the second plane, the first planes of the two translucent bodies being mutually parallel, and the second planes of the two translucent bodies being mutually parallel; a light beam splitting film having both surfaces respectively combined with the first planes of the two translucent bodies; and two groups of reflective film series respectively combined with the second planes of the two translucent bodies. The laser wavelength monitoring device has a greatly shortened wavelength monitoring optical path compared with the prior art, has a small footprint, and can realize miniaturized encapsulation, thus significantly reducing product encapsulation cost, and having high monitoring precision. |
