An integrated optical waveguide isolator based on multimode interference by wafer direct bonding

Yang, Jaesung; Roh, Jaehoon; Ok, Seong Hae; Woo, Deok Ha; Byun, Young Tae; Lee, W.Y.; Mizumoto, Tetsuya; Lee, S.

doi:10.1109/tmag.2005.854960

Cited by 16 publications

(5 citation statements)

References 8 publications

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“…The arms of MI have the same length L b , and the power coupling coefficient K M is different to 0.5, to assure the MI reflects some light. There is an optical isolator in the input port to avoid reflections [15]. This can be replaced by an amplifying optical isolator, providing design flexibility and loss compensation [16].…”

Section: Devicementioning

confidence: 99%

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Synthesis of optical filters using microring resonators with ultra-large FSR

Vargas

Vázquez

2010

Opt. Express

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We propose a novel synthesis method for designing flexible, tunable non-periodic filters. It is based on a building block which is presented by first time for these purposes, being the poles position tuned by means of a coupling coefficient and an amplifier gain. We present the device, the design equations and a design of a filter with flat response, 54 dB of crosstalk and less than 1.3 dB of ripple to explain and validate the method. These filters can be used as part of optical cross-connects for selecting channels avoiding very restrictive free spectral ranges. Also we check the correct operation of the device, against fabrication tolerances of coupling coefficients. Frequency dependence of the transfer function poles as a unique feature improving the crosstalk of the device spectral response is also analyzed.

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Section: Devicementioning

confidence: 99%

“…and it places the notches of the filter in frequencies given by: (15) For finding the zeros module in each FSR, we have to use the frequencies given in Eq. ( 15), to evaluate the r(Ω) in the Eq.…”

Section: Output Amentioning

confidence: 99%

Synthesis of optical filters using microring resonators with ultra-large FSR

Vargas

Vázquez

2010

Opt. Express

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“…1, there is an isolator in the input port and an optical amplifier inside the ring. Both of them can be implemented in optical fiber technology, or in integrated optic technology [11], [12]. The first one is to prevent the wave reflected, as we are using each SIRR stage in the transmission mode, and the second one is used for giving design flexibility.…”

Section: Structurementioning

confidence: 99%

Synthesis of Optical Filters Using Sagnac Interferometer in Ring Resonator

Vargas

Vázquez

2007

IEEE Photon. Technol. Lett.

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Abstract-We propose a new synthesis method for the implementation of infinite impulse response filters, using a Sagnac interferometer within a ring resonator. This structure permits the synthesis of second-order optical functions per stage. We present the parameters of the structure, which are related to the poles position, radial and azimuthal, and the design procedure, with an example of an autorregresive filter.

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“…In particular, monolithically integrated InP waveguide isolators are important in suppressing instability in large-scale photonic integrated circuits (PICs), which includes numerous active devices, such as LDs and semiconductor optical amplifiers (SOAs). For this purpose, various types of waveguide optical isolators have been researched up to date [1][2][3]. Recently, we have succeeded in demonstrating the first monolithic integration of TE mode waveguide optical isolator with a distributed feedback LD (DFB-LD) [4].…”

Section: Introductionmentioning

confidence: 99%