| US 7,580,441 B2 | ||
| Athermal external cavity laser | ||
| Jie Hyun Lee, Daejeon (Korea, Republic of); Mahn Yong Park, Daejeon (Korea, Republic of); Geon Jeong, Gwangju (Korea, Republic of); Chul Young Kim, Gwangju (Korea, Republic of); Seung Hyun Cho, Daejeon (Korea, Republic of); Woo Ram Lee, Daejeon (Korea, Republic of); and Byoung Whi Kim, Daejeon (Korea, Republic of) | ||
| Assigned to Electronics and Telecommunications Research Institute, (Korea, Republic of) | ||
| Filed on Dec. 05, 2006, as Appl. No. 11/634,792. | ||
| Claims priority of application No. 10-2005-0119063 (KR), filed on Dec. 07, 2005; and application No. 10-2006-0071649 (KR), filed on Jul. 28, 2006. | ||
| Prior Publication US 2007/0127538 A1, Jun. 07, 2007 | ||
| Int. Cl. H01S 3/08 (2006.01) | ||
| U.S. Cl. 372—92 [372/6; 372/99] | 12 Claims |
| 1. An athermal external cavity laser (ECL) comprising:
a semiconductor amplifier;
an optical fiber comprising a core in which a Bragg grating is formed and a cladding surrounding the core; and
a thermosetting polymer that fixes the optical fiber to a ferrule and has a negative thermooptical coefficient,
wherein the thickness of the cladding surrounding the core in which the Bragg grating is formed is smaller than that of the
cladding surrounding region of the core in which the Bragg grating is not formed, and the thermosetting polymer surrounds
the cladding.
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