| 摘要 |
PROBLEM TO BE SOLVED: To prevent interference which is generated by mutual contact among a plurality of temperature adjusting modules allocated within a laser module. SOLUTION: A temperature adjusting module 2 and a temperature adjusting module 3 are allocated on the bottom surface within a package 1. On the temperature adjusting module 2, a prism 12, a wavelength filter 13 and a mount 14 to hold a photodiode 15 are allocated to form a wavelength monitor unit. On the temperature adjusting module 3, an isolator 7, a lens holder 6 to hold a lens, a laser mount 8 for depositing an laser element 9 and a lens holder 10 to hold a lens 11 are allocated to form a laser emitting unit. Contact between the temperature adjusting modules 2 and 3 can be prevented, thereby preventing generation of interference by allocating an insulation plate 4 between the temperature adjusting modules 2 and 3. |
