Novel Design of Optical Filters Based on a Pair of MMI Power Divider/Combiner

Lee, Keh-Yi; Huang, Kenji; Lin, Yu‐Sheng

doi:10.1515/joc.2004.25.3.92

Cited by 4 publications

(5 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the field of silicon photonics, integrate optical devices based on multimode interference are particularly prevalent. Power dividers and combiners [9], thermo-optic switches and wavelength filters [10][11][12] are only a few examples of the numerous optical applications for MMI.…”

Section: Design and Resultsmentioning

confidence: 99%

Angled MMI optical switch

Akil

Othman

Swillam

2023

Integrated Optics: Design, Devices, Systems and Applications VII

View full text Add to dashboard Cite

The work presented here demonstrated and analyzed an angled multimode interference (AMMI) waveguide optical switch with a feedback network to reduce the length of the device. The optical power in the MMI different ports was controlled by changing the phase using an optical shifter. The MMI waveguide was symmetrically excited in forward direction, giving a single symmetrical image at the output port. This signal is then split into two equal halves using a Y-junction. Each half is guided in a single mode ring-like waveguide to be coupled to the MMI as feedback sources. According to the phase shift between the two rings, the signal can be switched to one of the output ports. A 25 μm tapered waveguide was used to change the spot size and reduce the optical losses, the tapers width for the inputs and outputs was optimized to be Wt =2.1 μm to fit our 6 μm MMI width. Angled ports were used for backward excitation. The angle between the ports and the MMI at the input was optimized at an angle of 8⁰. The MMI optimized length is 127.1 μm and extinction ratio of the proposed design was 18.2 dB and 16.5 dB for the two outputs ports at an operation wavelength of 1.55 μm.

show abstract

Section: Design and Resultsmentioning

confidence: 99%

Angled MMI optical switch

Akil

Othman

Swillam

2023

Integrated Optics: Design, Devices, Systems and Applications VII

View full text Add to dashboard Cite

show abstract

“…In particular, MMIs have shown their success in different applications due to their ability to control and manipulate different wavelengths/frequencies of light, while their fabrication and performance can be readily controlled [13]. Thus, MMIs have been incorporated in the design and structure of photonic devices for different applications such as power dividers and combiners [14], biosensors [15,16], multiplexers [17], optical switches [18], thermo-optic switches [19], and wavelength filters [20]. Moreover, angled MMI structures Photonics 2024, 11, 221 2 of 11 with improved coupling ratios and higher fabrication tolerances [21] have been used for gas sensing [22] and multiplexing [23] applications.…”

Section: Introductionmentioning

confidence: 99%

Designing an Optical Router Based on a Multimode-Interference Silicon-On-Insulator Coupler with Tunable Power Transmittance

Akil,

Othman,

Sherif

et al. 2024

Photonics

View full text Add to dashboard Cite

The demand on fast and high-bandwidth data transmission is in continuous increase. These demands are highly dependent on optical signal manipulation, including switching, modulation, and routing. We demonstrate a two-port silicon optical router based on the multimode interferometer (MMI) configuration. The same MMI structure was used for both inward and backward waveguiding to reduce the total length of the device. A phase shifter consisting of two ring-like waveguides made of silicon p-n junctions was used to introduce the phase shift needed for optical routing upon voltage application. Two designs for the MMI optical router were studied: Firstly, a conventional MMI with a crosstalk ratio of 15.1 dB was investigated. Finally, an angled MMI reaching a crosstalk ratio of 18.2 dB at a wavelength of 1.55 μm was investigated.

show abstract

“…These merits make MMI devices have been widely utilized in optical communication equipments and optical signal processing systems [1][2][3][4][5][6][7]. Several patterns of MMI optical splitters and their applications have been proposed for a few years [8][9][10][11]. Generally speaking, the MMI splitters have simpler shapes than the conventional optical branching devices because the latter often consist of some extra structures [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%