Mr. James P. Chambers Profile

James P. Chambers

at Texas A&M Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 12 October 2007 Paper

High frequency Pound-Drever-Hall sensing of ring resonator cavities

J. Chambers, Christi Madsen, Haiqiao Lin

Proceedings Volume 6770, 67700W (2007) https://doi.org/10.1117/12.752607

KEYWORDS: Resonators, Modulation, Interference (communication), Sensors, Fabry–Perot interferometers, Laser resonators, Signal detection, Phase shift keying, Feedback control, Environmental sensing

Read Abstract +

This paper establishes a procedure for increasing the sensitivity of measurements in integrated ring resonators beyond what has been previously accomplished. This is achieved by a high-frequency phase modulation lock to the ring cavities. A prototyped fiber Fabry-Perot cavity is used for comparison of the method to a similar cavity. The Pound-Drever-Hall (PDH) method is chosen as a proven, ultra-sensitive method with the exploration of a much higher frequency modulation than has been previously discussed to overcome comparatively low finesse of the ring resonator cavities. The high frequency facilitates the use of the same modulation signal to separately probe the phase information of different, integrated ring resonators with quality factors of 5.6 x10⁵ and 2.4 x10⁵. The large free spectral range of small cavities and low finesse provide a challenge to sensing and locking the stability of diode lasers due to the small dynamic range and signal-to-noise ratios (S/N). This can be offset by a calculated increase in modulation frequency using the PDH approach. A distributed feedback (DFB) laser is locked to a ring resonator cavity to demonstrate this sensitivity. This approach using integrated ring resonators is measured to have a refractive index resolution of 1.9x10^-8 that can be compared to other fiber and integrated sensors. The relationship between the signal-to-noise ratio and dynamic frequency range of the cavity error signal is explored with an algorithm to optimize this relationship. The free spectral range and the loss of the cavity provide input parameters to this relationship to determine the optimum S/N and range of the respective cavities used for locking and sensing. The purpose is to show how future contributions to the measurements and experiments of micro-cavities, specifically ring resonators, is well-served by the PDH method with high-frequency modulation.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years