Hong F Lin

US Patent:

6373867, Apr 16, 2002

Filed:

Jun 21, 2000

Appl. No.:

09/575675

Inventors:

Hong Lin - Palo Alto CA
Katherine Y. Lin - Mountain View CA

Assignee:

Calmar Optcom, Inc. - Mountain View CA

International Classification:

H01S 3098

US Classification:

372 18, 372 6, 372 75, 372 98

Abstract:

A passive mode-locked linear-resonator fiber laser using polarization-maintaining fibers and a saturable absorber to produce ultra short pulses and a long-term reliable operation with reduced maintenance. Such a fiber laser can be configured to produce tunable pulse repetition rate and tunable laser wavelength.

US Patent:

6567438, May 20, 2003

Filed:

Jul 17, 2001

Appl. No.:

09/908438

Inventors:

Hong Lin - Palo Alto CA

Assignee:

Calmar Optcom, Inc. - Sunnyvale CA

International Classification:

H01S 304

US Classification:

372 34, 372 94, 372 18, 372 6, 359337

Abstract:

Designs and techniques for actively stabilizing optical cavities in devices such as fiber lasers with reduced power consumption in the active control.

US Patent:

6546169, Apr 8, 2003

Filed:

May 21, 2001

Appl. No.:

09/862681

Inventors:

Hong Lin - Palo Alto CA
Dong Peng - Palo Alto CA

Assignee:

Calmar Optcom, Inc. - Mountain View CA

International Classification:

G02B 632

US Classification:

385 39, 385 33, 385 46, 385 34, 385 74, 385 27, 385 43

Abstract:

Techniques and devices that optically couple multiple pump fibers and a signal input fiber to a double-clad fiber with a high coupling efficiency.

US Patent:

6570892, May 27, 2003

Filed:

Apr 16, 2002

Appl. No.:

10/123942

Inventors:

Hong Lin - Palo Alto CA
Katherine Y. Lin - Mountain View CA

Assignee:

Calmar Optcom, Inc. - Mountain View CA

International Classification:

H01S 3098

US Classification:

372 6, 372 18

Abstract:

A passive mode-locked linear-resonator fiber laser using polarization-maintaining fibers and a saturable absorber to produce ultra short pulses and a long-term reliable operation with reduced maintenance. Such a fiber laser can be configured to produce tunable pulse repetition rate and tunable laser wavelength.

US Patent:

6590910, Jul 8, 2003

Filed:

Sep 24, 2001

Appl. No.:

09/969124

Inventors:

Hong Lin - Palo Alto CA

Assignee:

Calmar Optcom, Inc. - Sunnyvale CA

International Classification:

H01S 3098

US Classification:

372 18, 372 26, 372 12

Abstract:

Mode-locked fiber lasers with an active feedback control of the frequency chirp and a mechanism for adjusting the dispersion of the output pulses.

US Patent:

6643299, Nov 4, 2003

Filed:

Dec 31, 2001

Appl. No.:

10/037298

Inventors:

Hong Tony Lin - Palo Alto CA

Assignee:

Calmar Optcom, Inc. - Sunnyvale CA

International Classification:

H01S 330

US Classification:

372 6, 372 94, 372 18

Abstract:

Bi-metal and other passive thermal compensators for mitigating thermal-induced variations in the length of a fiber loop. Exemplary applications in fiber lasers are described.

US Patent:

6816652, Nov 9, 2004

Filed:

Mar 20, 2001

Appl. No.:

09/813445

Inventors:

Hong Lin - Palo Alto CA
Claire Yan Chen Lin - Palo Alto CA

Assignee:

Calmar Optcom, Inc. - Sunnyvale CA

International Classification:

G02B 626

US Classification:

385 39, 385 51

Abstract:

Techniques and devices that couple multiple pump fibers to a double-clad fiber by using a sleeve, a lens, an input fiber ferrule, and an output fiber ferrule.

US Patent:

6839363, Jan 4, 2005

Filed:

Mar 18, 2002

Appl. No.:

10/101532

Inventors:

Hong Tony Lin - Palo Alto CA, US
Chunglin Lee - San Jose CA, US
Perry Neos - Milpitas CA, US

Assignee:

Calmar Optcom, Inc. - Sunnyvale CA

International Classification:

H01S 3098
H01S 308
H01S 313

US Classification:

372 18, 94 29011

Abstract:

Digital control of actively mode-locked lasers where an active feedback control system is implemented to include a digital processor such as a microprocessor. The digital processor digitally extracts noise information from multiple monitor signals generated from the laser output and digitally diagnoses the operating condition of the laser based on the noise information. Based on the operating condition of the laser, the digital processor generates control signals to adjust the laser cavity to establish or regain the mode locking condition and to maintain the mode locking by reducing the output noise.